dcrat | 66bc2046ade6ee7d8a37ed169de795ea3ed78ef5fadb2ae1311758eac97d360a

Analysis

max time kernel
129s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
15/10/2022, 14:01

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General

Target
450feb62ffd1d5c1ffcefc8e173a29b4.exe
Size 2.6MB
Sample221015-rbjnsaffe9
SHA256 66bc2046ade6ee7d8a37ed169de795ea3ed78ef5fadb2ae1311758eac97d360a
MD5 450feb62ffd1d5c1ffcefc8e173a29b4
SHA1 6afcffc0832395c089d837dcf6b2ca0a74cbb9ff
SHA512 ea64595aee72ce0f214f2c44018301723c27d5d27492a282892f7d9f00ed9618ae358bdd1df976556b4836a1370b4db37cf8c58edd2f9a19b78ac14160d0f0cc
SSDEEP 49152:nbA3Rq0cOeGinYyV9fkymWXH3P/P4cKgQuKR330C8zOf+s:nbAcO+nbnkjW3f/QDB330PTs
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

dcrat infostealer persistence rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

Modifies WinLogon for persistence 2 TTPs 11 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\", \"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\", \"C:\\Recovery\\WindowsRE\\conhost.exe\", \"C:\\Users\\Public\\lsass.exe\", \"C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Esl\\cmd.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\", \"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\", \"C:\\Recovery\\WindowsRE\\conhost.exe\", \"C:\\Users\\Public\\lsass.exe\", \"C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Esl\\cmd.exe\", \"C:\\BrokerNet\\wininit.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\", \"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\", \"C:\\Recovery\\WindowsRE\\conhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\", \"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\", \"C:\\odt\\smss.exe\", \"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\", \"C:\\Users\\Public\\Videos\\sppsvc.exe\", \"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\", \"C:\\Recovery\\WindowsRE\\conhost.exe\", \"C:\\Users\\Public\\lsass.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\", \"C:\\Recovery\\WindowsRE\\dllhost.exe\", \"C:\\Users\\Default User\\RuntimeBroker.exe\""	chainreviewsaves.exe

Process spawned unexpected child process 33 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3368	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4228	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	892	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	492	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3108	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3788	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1944	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	384	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3308	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4528	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4704	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3420	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4768	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2800	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4540	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2344	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2064	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4904	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1804	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	728	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1432	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4164	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4212	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2540	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4332	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3020	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4140	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3436	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4300	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3552	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2556	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4488	1288	schtasks.exe	59
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2332	1288	schtasks.exe	59

DCRat payload 5 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/files/0x0001000000022df5-139.dat	dcrat
behavioral2/files/0x0001000000022df5-140.dat	dcrat
behavioral2/memory/1564-141-0x0000000000C60000-0x0000000000EB2000-memory.dmp	dcrat
behavioral2/files/0x0001000000022e03-147.dat	dcrat
behavioral2/files/0x0001000000022e03-146.dat	dcrat

Executes dropped EXE 2 IoCs

pid	Process
1564	chainreviewsaves.exe
968	dllhost.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	450feb62ffd1d5c1ffcefc8e173a29b4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	chainreviewsaves.exe

Adds Run key to start application 2 TTPs 22 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Default User\\RuntimeBroker.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Users\\Public\\lsass.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cmd = "\"C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Esl\\cmd.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cmd = "\"C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Esl\\cmd.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Recovery\\WindowsRE\\dllhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Default User\\RuntimeBroker.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\odt\\smss.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "\"C:\\Recovery\\WindowsRE\\conhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Users\\Public\\lsass.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\BrokerNet\\wininit.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Recovery\\WindowsRE\\dllhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Users\\Public\\Videos\\sppsvc.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "\"C:\\Recovery\\WindowsRE\\conhost.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Windows Photo Viewer\\en-US\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\odt\\smss.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Recovery\\WindowsRE\\SppExtComObj.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Users\\Public\\Videos\\sppsvc.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Program Files\\Windows NT\\TableTextService\\Registry.exe\""	chainreviewsaves.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\BrokerNet\\wininit.exe\""	chainreviewsaves.exe

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Photo Viewer\en-US\e1ef82546f0b02	chainreviewsaves.exe
File created	C:\Program Files\Windows NT\TableTextService\Registry.exe	chainreviewsaves.exe
File created	C:\Program Files\Windows NT\TableTextService\ee2ad38f3d4382	chainreviewsaves.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\cmd.exe	chainreviewsaves.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\ebf1f9fa8afd6d	chainreviewsaves.exe
File created	C:\Program Files (x86)\Windows Photo Viewer\en-US\SppExtComObj.exe	chainreviewsaves.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\en-US\SppExtComObj.exe	chainreviewsaves.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 33 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3308	schtasks.exe
3420	schtasks.exe
4540	schtasks.exe
2064	schtasks.exe
1804	schtasks.exe
4332	schtasks.exe
3020	schtasks.exe
3108	schtasks.exe
2332	schtasks.exe
384	schtasks.exe
2800	schtasks.exe
3436	schtasks.exe
4300	schtasks.exe
3368	schtasks.exe
492	schtasks.exe
1944	schtasks.exe
4164	schtasks.exe
2556	schtasks.exe
892	schtasks.exe
4768	schtasks.exe
4904	schtasks.exe
4212	schtasks.exe
4228	schtasks.exe
3788	schtasks.exe
4528	schtasks.exe
2344	schtasks.exe
728	schtasks.exe
3552	schtasks.exe
4488	schtasks.exe
4704	schtasks.exe
1432	schtasks.exe
2540	schtasks.exe
4140	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	450feb62ffd1d5c1ffcefc8e173a29b4.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
1564	chainreviewsaves.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe
968	dllhost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
968	dllhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	chainreviewsaves.exe
Token: SeDebugPrivilege	968	dllhost.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4764	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	85
PID 4844 wrote to memory of 4764	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	85
PID 4844 wrote to memory of 4764	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	85
PID 4844 wrote to memory of 816	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	86
PID 4844 wrote to memory of 816	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	86
PID 4844 wrote to memory of 816	4844	450feb62ffd1d5c1ffcefc8e173a29b4.exe	86
PID 4764 wrote to memory of 4320	4764	WScript.exe	93
PID 4764 wrote to memory of 4320	4764	WScript.exe	93
PID 4764 wrote to memory of 4320	4764	WScript.exe	93
PID 4320 wrote to memory of 1564	4320	cmd.exe	95
PID 4320 wrote to memory of 1564	4320	cmd.exe	95
PID 1564 wrote to memory of 968	1564	chainreviewsaves.exe	129
PID 1564 wrote to memory of 968	1564	chainreviewsaves.exe	129

C:\Users\Admin\AppData\Local\Temp\450feb62ffd1d5c1ffcefc8e173a29b4.exe
"C:\Users\Admin\AppData\Local\Temp\450feb62ffd1d5c1ffcefc8e173a29b4.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\BrokerNet\s0cB3GCIP7j88eBcGSL85oFKfqb.vbe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\BrokerNet\Gh72ydd2wz.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4320
  - - C:\BrokerNet\chainreviewsaves.exe
      "C:\BrokerNet\chainreviewsaves.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Checks computer location settings
      Adds Run key to start application
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1564
    - - C:\Recovery\WindowsRE\dllhost.exe
        
        "C:\Recovery\WindowsRE\dllhost.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        
        PID:968
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\BrokerNet\file.vbs"
  2⤵
  PID:816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Photo Viewer\en-US\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\en-US\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4228

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Photo Viewer\en-US\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:892

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3788

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:384

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3308

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\odt\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4768

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Videos\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2344

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Public\Videos\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Users\Public\Videos\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows NT\TableTextService\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows NT\TableTextService\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1432

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4164

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Users\Public\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4332

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Public\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3020

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Users\Public\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4140

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\cmd.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3436

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4300

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\BrokerNet\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2556

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\BrokerNet\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\BrokerNet\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Winlogon Helper DLL

T1004

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Gh72ydd2wz.bat

Path C:\BrokerNet\Gh72ydd2wz.bat
Size 35B
SHA256 5298cd47510ba622fd2a1728be0b8526d46e6b6a5322ed16fa7c5868332261c5
MD5 18109232c5965c94f6d67f5ac81d6883
SHA1 16ae3b6e7e34c7289fa74807b238812463b93224
SHA512 4b6a73bb40e3e3473f28fc53302eb580b36b771d2440a51c8a656b56ec2b2c39d320b09621f7ed693423ae1e52a36b941898e70837842505f544cc1f6147242a
MD5 SHA1 SHA512

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chainreviewsaves.exe

Path C:\BrokerNet\chainreviewsaves.exe
Size 2.3MB
SHA256 ab550c9e53eada72d9853693afebaca370e0369bcd45fe9228e280844204b1a1
MD5 e20f37081674eaa511cfc8c6e0d60baa
SHA1 93ea1ed6db950450def39e2e2eeab20e4326e008
SHA512 3ac6c3836b23ae1b65a0c6dc2a403ca4504f3c4c2f85669fec624db0ee49411247d401751ef27852a0164d6bc297b88e4cf095453ce7fcd0ca04cefc55af2730
SSDEEP 49152:N0cOeGinYyV9fkymWXH3P/P4cKgQuKR330C8zOf+:OcO+nbnkjW3f/QDB330PT
MD5 SHA1 SHA512 SSDEEP

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chainreviewsaves.exe

Path C:\BrokerNet\chainreviewsaves.exe
Size 2.3MB
SHA256 ab550c9e53eada72d9853693afebaca370e0369bcd45fe9228e280844204b1a1
MD5 e20f37081674eaa511cfc8c6e0d60baa
SHA1 93ea1ed6db950450def39e2e2eeab20e4326e008
SHA512 3ac6c3836b23ae1b65a0c6dc2a403ca4504f3c4c2f85669fec624db0ee49411247d401751ef27852a0164d6bc297b88e4cf095453ce7fcd0ca04cefc55af2730
SSDEEP 49152:N0cOeGinYyV9fkymWXH3P/P4cKgQuKR330C8zOf+:OcO+nbnkjW3f/QDB330PT
MD5 SHA1 SHA512 SSDEEP

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file.vbs

Path C:\BrokerNet\file.vbs
Size 34B
SHA256 f1cccb5ae4aa51d293bd3c7d2a1a04cb7847d22c5db8e05ac64e9a6d7455aa0b
MD5 677cc4360477c72cb0ce00406a949c61
SHA1 b679e8c3427f6c5fc47c8ac46cd0e56c9424de05
SHA512 7cfe2cc92f9e659f0a15a295624d611b3363bd01eb5bcf9bc7681ea9b70b0564d192d570d294657c8dc2c93497fa3b4526c975a9bf35d69617c31d9936573c6a
MD5 SHA1 SHA512

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s0cB3GCIP7j88eBcGSL85oFKfqb.vbe

Path C:\BrokerNet\s0cB3GCIP7j88eBcGSL85oFKfqb.vbe
Size 196B
SHA256 2d5c41a32278b2e380ba71dc21888a9734bdae012d5e4af710ab961790e77ff2
MD5 d7e45a789db8ed895ade6efa6bd54fe1
SHA1 cc3a0bc0e93b80c2e69ed1371e8bcc3fbaac6b1f
SHA512 d8e179588c2ab9ff750c687dede1bb65328e5e12906404d6ef45c3f30761bc4f941446b26d548f4c3725085c3a49010df19f735d491a48f675f9312aa3846168
MD5 SHA1 SHA512

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dllhost.exe

Path C:\Recovery\WindowsRE\dllhost.exe
Size 2.3MB
SHA256 ab550c9e53eada72d9853693afebaca370e0369bcd45fe9228e280844204b1a1
MD5 e20f37081674eaa511cfc8c6e0d60baa
SHA1 93ea1ed6db950450def39e2e2eeab20e4326e008
SHA512 3ac6c3836b23ae1b65a0c6dc2a403ca4504f3c4c2f85669fec624db0ee49411247d401751ef27852a0164d6bc297b88e4cf095453ce7fcd0ca04cefc55af2730
SSDEEP 49152:N0cOeGinYyV9fkymWXH3P/P4cKgQuKR330C8zOf+:OcO+nbnkjW3f/QDB330PT
MD5 SHA1 SHA512 SSDEEP

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dllhost.exe

Path C:\Recovery\WindowsRE\dllhost.exe
Size 2.3MB
SHA256 ab550c9e53eada72d9853693afebaca370e0369bcd45fe9228e280844204b1a1
MD5 e20f37081674eaa511cfc8c6e0d60baa
SHA1 93ea1ed6db950450def39e2e2eeab20e4326e008
SHA512 3ac6c3836b23ae1b65a0c6dc2a403ca4504f3c4c2f85669fec624db0ee49411247d401751ef27852a0164d6bc297b88e4cf095453ce7fcd0ca04cefc55af2730
SSDEEP 49152:N0cOeGinYyV9fkymWXH3P/P4cKgQuKR330C8zOf+:OcO+nbnkjW3f/QDB330PT
MD5 SHA1 SHA512 SSDEEP

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memory/968-149-0x00007FFE93830000-0x00007FFE942F1000-memory.dmp

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memory/968-150-0x00007FFE93830000-0x00007FFE942F1000-memory.dmp

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memory/1564-141-0x0000000000C60000-0x0000000000EB2000-memory.dmp

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memory/1564-142-0x00007FFE93830000-0x00007FFE942F1000-memory.dmp

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memory/1564-143-0x00000000030E0000-0x0000000003130000-memory.dmp

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memory/1564-144-0x000000001DCB0000-0x000000001E1D8000-memory.dmp

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memory/1564-148-0x00007FFE93830000-0x00007FFE942F1000-memory.dmp

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