dcrat | 37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 08:54

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General

Target

JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe
Size

1.3MB
MD5

f47e4681a5f9a4fdb980c154d3a544dc
SHA1

57902e05d3f5df45d7cea35ebfabee114a412a9e
SHA256

37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5
SHA512

a889d53cc0277cfa74119cc6d2ebaab9a4b0213e048da0b0e554f1da6a75e5662adfad05efc4947a4bd009eb397e422013dc22766d30cfbbeb132fc618a5eb60
SSDEEP

24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

Score

10^/10

dcrat discovery execution infostealer rat

Malware Config

Signatures

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

Process spawned unexpected child process 12 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	2404	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3044	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	324	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1340	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2452	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1060	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1808	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2988	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2672	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2360	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2904	1632	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2896	1632	schtasks.exe	34

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0007000000019268-12.dat	dcrat
behavioral1/memory/2772-13-0x0000000001150000-0x0000000001260000-memory.dmp	dcrat

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2220	powershell.exe
1968	powershell.exe
2548	powershell.exe
1536	powershell.exe
300	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2772	DllCommonsvc.exe
1640	DllCommonsvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2840	cmd.exe
2840	cmd.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DllCommonsvc.exe	DllCommonsvc.exe
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\a76d7bf15d8370	DllCommonsvc.exe
File created	C:\Program Files\Windows Portable Devices\cmd.exe	DllCommonsvc.exe
File created	C:\Program Files\Windows Portable Devices\ebf1f9fa8afd6d	DllCommonsvc.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2404	schtasks.exe
324	schtasks.exe
1340	schtasks.exe
2904	schtasks.exe
2988	schtasks.exe
2672	schtasks.exe
2360	schtasks.exe
2896	schtasks.exe
3044	schtasks.exe
2452	schtasks.exe
1060	schtasks.exe
1808	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2772	DllCommonsvc.exe
2548	powershell.exe
2220	powershell.exe
1536	powershell.exe
1968	powershell.exe
300	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	DllCommonsvc.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	2220	powershell.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeDebugPrivilege	300	powershell.exe
Token: SeDebugPrivilege	1640	DllCommonsvc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2788	2168	JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe	30
PID 2168 wrote to memory of 2788	2168	JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe	30
PID 2168 wrote to memory of 2788	2168	JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe	30
PID 2168 wrote to memory of 2788	2168	JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe	30
PID 2788 wrote to memory of 2840	2788	WScript.exe	31
PID 2788 wrote to memory of 2840	2788	WScript.exe	31
PID 2788 wrote to memory of 2840	2788	WScript.exe	31
PID 2788 wrote to memory of 2840	2788	WScript.exe	31
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2772 wrote to memory of 2220	2772	DllCommonsvc.exe	47
PID 2772 wrote to memory of 2220	2772	DllCommonsvc.exe	47
PID 2772 wrote to memory of 2220	2772	DllCommonsvc.exe	47
PID 2772 wrote to memory of 1968	2772	DllCommonsvc.exe	48
PID 2772 wrote to memory of 1968	2772	DllCommonsvc.exe	48
PID 2772 wrote to memory of 1968	2772	DllCommonsvc.exe	48
PID 2772 wrote to memory of 2548	2772	DllCommonsvc.exe	49
PID 2772 wrote to memory of 2548	2772	DllCommonsvc.exe	49
PID 2772 wrote to memory of 2548	2772	DllCommonsvc.exe	49
PID 2772 wrote to memory of 1536	2772	DllCommonsvc.exe	50
PID 2772 wrote to memory of 1536	2772	DllCommonsvc.exe	50
PID 2772 wrote to memory of 1536	2772	DllCommonsvc.exe	50
PID 2772 wrote to memory of 300	2772	DllCommonsvc.exe	51
PID 2772 wrote to memory of 300	2772	DllCommonsvc.exe	51
PID 2772 wrote to memory of 300	2772	DllCommonsvc.exe	51
PID 2772 wrote to memory of 2068	2772	DllCommonsvc.exe	56
PID 2772 wrote to memory of 2068	2772	DllCommonsvc.exe	56
PID 2772 wrote to memory of 2068	2772	DllCommonsvc.exe	56
PID 2068 wrote to memory of 1408	2068	cmd.exe	59
PID 2068 wrote to memory of 1408	2068	cmd.exe	59
PID 2068 wrote to memory of 1408	2068	cmd.exe	59
PID 2068 wrote to memory of 1640	2068	cmd.exe	60
PID 2068 wrote to memory of 1640	2068	cmd.exe	60
PID 2068 wrote to memory of 1640	2068	cmd.exe	60

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37f14473ab38452394c7ec341f31923e6001fbee471c6aa6468f0941935d2dd5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\providercommon\1zu9dW.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2840
  - - C:\providercommon\DllCommonsvc.exe
      "C:\providercommon\DllCommonsvc.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2772
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2220
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\sppsvc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1968
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DllCommonsvc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2548
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\OSPPSVC.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1536
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Portable Devices\cmd.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:300
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\qASn94NHdr.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2068
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:1408
      - C:\providercommon\DllCommonsvc.exe
        
        "C:\providercommon\DllCommonsvc.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\providercommon\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\providercommon\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\providercommon\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:324

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvcD" /sc MINUTE /mo 11 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DllCommonsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1340

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvc" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DllCommonsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2452

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvcD" /sc MINUTE /mo 5 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DllCommonsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2672

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Portable Devices\cmd.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2360

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Portable Devices\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\qASn94NHdr.bat

Filesize
199B

MD5
3942b0f359281c8e22850fc902e4a8fa

SHA1
205e8cd1a41b7ba95a9bad64320484521f44c5b0

SHA256
61b85551c14601ee73d889866560624c13ceeb5a309abf2e4aff8687dcc4d1ab

SHA512
ab97b42d062e0cf99042d75803010191121fe31d05a440ddcec686f20553e028757f8968048e460f2c705ae3a0eb91f5fa8f051996502ce69e94ac9e5bf0276d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c739a5c8edbd27a68740186c8b612c32

SHA1
d6aecaf94f12673866c02acb31256ab5c13f9f0c

SHA256
bdf3755450d4082f9f90c92186eac1e3646dc429b4cbd866447e8a1b49a623de

SHA512
d486399f72fe116456efcd412d6faf9cf08fd79f7e188bb49a7f69013645b91121a6770256adfc3de08552f2921cd304d61a22029e6dcd45e61bac5692bc9966

Download Submit
C:\providercommon\1zu9dW.bat

Filesize
36B

MD5
6783c3ee07c7d151ceac57f1f9c8bed7

SHA1
17468f98f95bf504cc1f83c49e49a78526b3ea03

SHA256
8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

SHA512
c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

Download Submit
C:\providercommon\DllCommonsvc.exe

Filesize
1.0MB

MD5
bd31e94b4143c4ce49c17d3af46bcad0

SHA1
f8c51ff3ff909531d9469d4ba1bbabae101853ff

SHA256
b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

SHA512
f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

Download Submit
C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

Filesize
197B

MD5
8088241160261560a02c84025d107592

SHA1
083121f7027557570994c9fc211df61730455bb5

SHA256
2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

SHA512
20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

Download Submit
memory/2548-40-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2548-41-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2772-13-0x0000000001150000-0x0000000001260000-memory.dmp

Filesize
1.1MB

Download
memory/2772-14-0x0000000000440000-0x0000000000452000-memory.dmp

Filesize
72KB

Download
memory/2772-15-0x0000000000450000-0x000000000045C000-memory.dmp

Filesize
48KB

Download
memory/2772-16-0x0000000000460000-0x000000000046C000-memory.dmp

Filesize
48KB

Download
memory/2772-17-0x00000000005F0000-0x00000000005FC000-memory.dmp

Filesize
48KB

Download