dcrat | 6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e

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 01:56

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General

Target

JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe
Size

1.3MB
MD5

65448442daafe37f4b1cdedf450d0f64
SHA1

79e9bbd1934b923961908fdfe013231798bfec7d
SHA256

6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e
SHA512

a20a813bc848313035c30d0aef92eea1b51bff519a59fdc99e72169de0a91812a8902dda0b8fc61507e4c36b15814359e9b835ce2ee0059249e9290a5b5bfb48
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 15 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	1772	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2708	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2608	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1704	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2132	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2824	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1652	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1236	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1412	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1860	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1648	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2040	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1488	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2832	2880	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2000	2880	schtasks.exe	34

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0008000000016141-9.dat	dcrat
behavioral1/memory/2744-13-0x00000000001F0000-0x0000000000300000-memory.dmp	dcrat

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2004	powershell.exe
1224	powershell.exe
2012	powershell.exe
1780	powershell.exe
1044	powershell.exe
548	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2744	DllCommonsvc.exe
740	DllCommonsvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2704	cmd.exe
2704	cmd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Panther\setup.exe\winlogon.exe	DllCommonsvc.exe
File created	C:\Windows\Panther\setup.exe\cc11b995f2a76d	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_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.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 15 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2708	schtasks.exe
2608	schtasks.exe
1704	schtasks.exe
1488	schtasks.exe
1860	schtasks.exe
2040	schtasks.exe
2132	schtasks.exe
2824	schtasks.exe
1652	schtasks.exe
1412	schtasks.exe
1648	schtasks.exe
1772	schtasks.exe
1236	schtasks.exe
2832	schtasks.exe
2000	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2744	DllCommonsvc.exe
548	powershell.exe
1780	powershell.exe
2004	powershell.exe
1044	powershell.exe
1224	powershell.exe
2012	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	DllCommonsvc.exe
Token: SeDebugPrivilege	548	powershell.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	2004	powershell.exe
Token: SeDebugPrivilege	1044	powershell.exe
Token: SeDebugPrivilege	1224	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	740	DllCommonsvc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2536	2532	JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe	30
PID 2532 wrote to memory of 2536	2532	JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe	30
PID 2532 wrote to memory of 2536	2532	JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe	30
PID 2532 wrote to memory of 2536	2532	JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe	30
PID 2536 wrote to memory of 2704	2536	WScript.exe	31
PID 2536 wrote to memory of 2704	2536	WScript.exe	31
PID 2536 wrote to memory of 2704	2536	WScript.exe	31
PID 2536 wrote to memory of 2704	2536	WScript.exe	31
PID 2704 wrote to memory of 2744	2704	cmd.exe	33
PID 2704 wrote to memory of 2744	2704	cmd.exe	33
PID 2704 wrote to memory of 2744	2704	cmd.exe	33
PID 2704 wrote to memory of 2744	2704	cmd.exe	33
PID 2744 wrote to memory of 2004	2744	DllCommonsvc.exe	50
PID 2744 wrote to memory of 2004	2744	DllCommonsvc.exe	50
PID 2744 wrote to memory of 2004	2744	DllCommonsvc.exe	50
PID 2744 wrote to memory of 1224	2744	DllCommonsvc.exe	51
PID 2744 wrote to memory of 1224	2744	DllCommonsvc.exe	51
PID 2744 wrote to memory of 1224	2744	DllCommonsvc.exe	51
PID 2744 wrote to memory of 2012	2744	DllCommonsvc.exe	53
PID 2744 wrote to memory of 2012	2744	DllCommonsvc.exe	53
PID 2744 wrote to memory of 2012	2744	DllCommonsvc.exe	53
PID 2744 wrote to memory of 548	2744	DllCommonsvc.exe	54
PID 2744 wrote to memory of 548	2744	DllCommonsvc.exe	54
PID 2744 wrote to memory of 548	2744	DllCommonsvc.exe	54
PID 2744 wrote to memory of 1780	2744	DllCommonsvc.exe	55
PID 2744 wrote to memory of 1780	2744	DllCommonsvc.exe	55
PID 2744 wrote to memory of 1780	2744	DllCommonsvc.exe	55
PID 2744 wrote to memory of 1044	2744	DllCommonsvc.exe	56
PID 2744 wrote to memory of 1044	2744	DllCommonsvc.exe	56
PID 2744 wrote to memory of 1044	2744	DllCommonsvc.exe	56
PID 2744 wrote to memory of 2692	2744	DllCommonsvc.exe	62
PID 2744 wrote to memory of 2692	2744	DllCommonsvc.exe	62
PID 2744 wrote to memory of 2692	2744	DllCommonsvc.exe	62
PID 2692 wrote to memory of 1856	2692	cmd.exe	64
PID 2692 wrote to memory of 1856	2692	cmd.exe	64
PID 2692 wrote to memory of 1856	2692	cmd.exe	64
PID 2692 wrote to memory of 740	2692	cmd.exe	65
PID 2692 wrote to memory of 740	2692	cmd.exe	65
PID 2692 wrote to memory of 740	2692	cmd.exe	65

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_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6cede594767c546713681e1ce4c8328708406fd25546c8e0dfba7771807def5e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- 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:2536
- - 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:2704
  - - C:\providercommon\DllCommonsvc.exe
      "C:\providercommon\DllCommonsvc.exe"
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2744
    - - 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:2004
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Idle.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1224
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\csrss.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2012
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\OSPPSVC.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:548
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1780
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\Panther\setup.exe\winlogon.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1044
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\6lyLrzP83n.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2692
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:1856
      - C:\providercommon\DllCommonsvc.exe
        
        "C:\providercommon\DllCommonsvc.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2132

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 11 /tr "'C:\providercommon\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\providercommon\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1236

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 7 /tr "'C:\providercommon\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1412

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2832

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\Panther\setup.exe\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2000

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\6lyLrzP83n.bat

Filesize
199B

MD5
7b8b96089c7037a45cd9632878d79bdd

SHA1
0feacfaeff9cfc426ad8313af5be268d3eb9b980

SHA256
dcb61265584662894057f7608674b2f07f544d1d9cd4594e60f9aa165d9f37a6

SHA512
3d6e96e22b2507673553daaf8c2088f1f39489c2bc82b3dc05295f254ea1af23570c074d3363ab76292789c6f04cbe7e7494f68fb136dea4cb4e45a9341a4ab0

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

Filesize
7KB

MD5
59c9cfc9ca5e46a171cc69056639cb8a

SHA1
0bf2015a32838f1b303f52ea6aca237bfa287527

SHA256
5fd16c7e6f72fe30649d51f0de94724f1e1e644707cd3582c5feebb6598335c7

SHA512
daf7c59edc3abca8ce0966e21ab5f4a2b891790795865ccb488d86311531016482e67d2385d87d063c7739db684b76b193c1f46f6b04e2639f3de8b654ffaf4c

Download Submit
C:\providercommon\1zu9dW.bat

Filesize
36B

MD5
6783c3ee07c7d151ceac57f1f9c8bed7

SHA1
17468f98f95bf504cc1f83c49e49a78526b3ea03

SHA256
8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

SHA512
c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

Download Submit
C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

Filesize
197B

MD5
8088241160261560a02c84025d107592

SHA1
083121f7027557570994c9fc211df61730455bb5

SHA256
2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

SHA512
20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

Download Submit
\providercommon\DllCommonsvc.exe

Filesize
1.0MB

MD5
bd31e94b4143c4ce49c17d3af46bcad0

SHA1
f8c51ff3ff909531d9469d4ba1bbabae101853ff

SHA256
b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

SHA512
f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

Download Submit
memory/548-52-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/548-46-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2744-13-0x00000000001F0000-0x0000000000300000-memory.dmp

Filesize
1.1MB

Download
memory/2744-14-0x0000000000470000-0x0000000000482000-memory.dmp

Filesize
72KB

Download
memory/2744-15-0x0000000000490000-0x000000000049C000-memory.dmp

Filesize
48KB

Download
memory/2744-16-0x0000000000480000-0x000000000048C000-memory.dmp

Filesize
48KB

Download
memory/2744-17-0x0000000000700000-0x000000000070C000-memory.dmp

Filesize
48KB

Download