dcrat | 38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 05:23

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General

Target

JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe
Size

1.3MB
MD5

5c21bfe08cdbd09b9e1679e35c5c0fa6
SHA1

d9ed120102e11ffb42bfcc0bb22e65000cf66d66
SHA256

38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7
SHA512

3794f673aecfdb46f26e182d2a5b269724b7760a1e48a9e41a0fdce2d6054892b074f8ca7faa8fe3851f318cdc1e595457ef717f41c74c9bd4d7ae95d05add30
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	2716	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2672	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2712	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2612	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2328	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2160	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2700	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2464	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2520	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1876	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	980	2444	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1692	2444	schtasks.exe	33

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0008000000016be9-12.dat	dcrat
behavioral1/memory/2784-13-0x0000000000DC0000-0x0000000000ED0000-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
2376	powershell.exe
268	powershell.exe
1992	powershell.exe
2568	powershell.exe
2012	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2784	DllCommonsvc.exe
1996	DllCommonsvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2984	cmd.exe
2984	cmd.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Media Player\csrss.exe	DllCommonsvc.exe
File opened for modification	C:\Program Files\Windows Media Player\csrss.exe	DllCommonsvc.exe
File created	C:\Program Files\Windows Media Player\886983d96e3d3e	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_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.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
2712	schtasks.exe
2700	schtasks.exe
2520	schtasks.exe
1876	schtasks.exe
980	schtasks.exe
1692	schtasks.exe
2716	schtasks.exe
2672	schtasks.exe
2612	schtasks.exe
2328	schtasks.exe
2160	schtasks.exe
2464	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2784	DllCommonsvc.exe
1992	powershell.exe
2376	powershell.exe
2012	powershell.exe
2568	powershell.exe
268	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	DllCommonsvc.exe
Token: SeDebugPrivilege	1996	DllCommonsvc.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	268	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2224	2420	JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe	29
PID 2420 wrote to memory of 2224	2420	JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe	29
PID 2420 wrote to memory of 2224	2420	JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe	29
PID 2420 wrote to memory of 2224	2420	JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe	29
PID 2224 wrote to memory of 2984	2224	WScript.exe	30
PID 2224 wrote to memory of 2984	2224	WScript.exe	30
PID 2224 wrote to memory of 2984	2224	WScript.exe	30
PID 2224 wrote to memory of 2984	2224	WScript.exe	30
PID 2984 wrote to memory of 2784	2984	cmd.exe	32
PID 2984 wrote to memory of 2784	2984	cmd.exe	32
PID 2984 wrote to memory of 2784	2984	cmd.exe	32
PID 2984 wrote to memory of 2784	2984	cmd.exe	32
PID 2784 wrote to memory of 1992	2784	DllCommonsvc.exe	46
PID 2784 wrote to memory of 1992	2784	DllCommonsvc.exe	46
PID 2784 wrote to memory of 1992	2784	DllCommonsvc.exe	46
PID 2784 wrote to memory of 2568	2784	DllCommonsvc.exe	47
PID 2784 wrote to memory of 2568	2784	DllCommonsvc.exe	47
PID 2784 wrote to memory of 2568	2784	DllCommonsvc.exe	47
PID 2784 wrote to memory of 2012	2784	DllCommonsvc.exe	48
PID 2784 wrote to memory of 2012	2784	DllCommonsvc.exe	48
PID 2784 wrote to memory of 2012	2784	DllCommonsvc.exe	48
PID 2784 wrote to memory of 2376	2784	DllCommonsvc.exe	49
PID 2784 wrote to memory of 2376	2784	DllCommonsvc.exe	49
PID 2784 wrote to memory of 2376	2784	DllCommonsvc.exe	49
PID 2784 wrote to memory of 268	2784	DllCommonsvc.exe	50
PID 2784 wrote to memory of 268	2784	DllCommonsvc.exe	50
PID 2784 wrote to memory of 268	2784	DllCommonsvc.exe	50
PID 2784 wrote to memory of 1996	2784	DllCommonsvc.exe	54
PID 2784 wrote to memory of 1996	2784	DllCommonsvc.exe	54
PID 2784 wrote to memory of 1996	2784	DllCommonsvc.exe	54

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_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38e61c6430704d0bf9dffe83802601cffa80a8e5da292bb87c2fcc49b05aced7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- 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:2224
- - 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:2984
  - - 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:2784
    - - 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:1992
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Media Player\csrss.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2568
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\DllCommonsvc.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\lsm.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2376
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default\NetHood\services.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:268
    - - C:\providercommon\DllCommonsvc.exe
        
        "C:\providercommon\DllCommonsvc.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1996

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Media Player\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\csrss.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 "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Media Player\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvcD" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\DllCommonsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2612

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\DllCommonsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "DllCommonsvcD" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\DllCommonsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\providercommon\lsm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2700

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\providercommon\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\providercommon\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Users\Default\NetHood\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Default\NetHood\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Users\Default\NetHood\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1b6939727c0ca426b9b23bb830ea53ea

SHA1
fa40393733cbd7531c0de7ecc18ab4e93927f629

SHA256
cfb6300859ebf0e1f5eebaf0449bf915344de5c578b3326185390da34f8a134b

SHA512
f41cd6dbfcc5c236a23c7f5cdea05473ac450912659e9e7ee37090e0e3ec53e16a2df0f7cf6bd8f7db8be8c7db48a827494daf596788e9e85cb7ee78046b8309

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/1992-42-0x0000000002230000-0x0000000002238000-memory.dmp

Filesize
32KB

Download
memory/2012-41-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2784-13-0x0000000000DC0000-0x0000000000ED0000-memory.dmp

Filesize
1.1MB

Download
memory/2784-14-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/2784-15-0x0000000000570000-0x000000000057C000-memory.dmp

Filesize
48KB

Download
memory/2784-16-0x0000000000B20000-0x0000000000B2C000-memory.dmp

Filesize
48KB

Download
memory/2784-17-0x0000000000B30000-0x0000000000B3C000-memory.dmp

Filesize
48KB

Download