dcrat | 97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b

General

Target

JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe
Size

1.3MB
MD5

46a5fa33b390bc19a16ac666b39cc679
SHA1

5da7928b346cab95536cbf328c1fa2ebed387da8
SHA256

97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b
SHA512

3a38cf94f2a20f95410c3b0700cf4b7126cc1a6cc51e838cb03cb4d955062565524d77e4ca788b5d1394ac9e20bb3b3346efdf41271625945b641a9fc1712e8b
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 6 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	2684	2708	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2288	2708	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2588	2708	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3064	2708	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	2708	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2552	2708	schtasks.exe	34

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0008000000016d71-9.dat	dcrat
behavioral1/memory/2880-13-0x0000000000B60000-0x0000000000C70000-memory.dmp	dcrat
behavioral1/memory/1784-28-0x0000000000320000-0x0000000000430000-memory.dmp	dcrat

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2568	powershell.exe
2616	powershell.exe
2584	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2880	DllCommonsvc.exe
1784	taskhost.exe

Loads dropped DLL 2 IoCs

pid	Process
2176	cmd.exe
2176	cmd.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\explorer.exe	DllCommonsvc.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\7a0fd90576e088	DllCommonsvc.exe
File created	C:\Program Files\Microsoft Games\taskhost.exe	DllCommonsvc.exe
File opened for modification	C:\Program Files\Microsoft Games\taskhost.exe	DllCommonsvc.exe
File created	C:\Program Files\Microsoft Games\b75386f1303e64	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_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.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 6 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2684	schtasks.exe
2288	schtasks.exe
2588	schtasks.exe
3064	schtasks.exe
2720	schtasks.exe
2552	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2880	DllCommonsvc.exe
2584	powershell.exe
2616	powershell.exe
2568	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	DllCommonsvc.exe
Token: SeDebugPrivilege	1784	taskhost.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 576	1964	JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe	30
PID 1964 wrote to memory of 576	1964	JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe	30
PID 1964 wrote to memory of 576	1964	JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe	30
PID 1964 wrote to memory of 576	1964	JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe	30
PID 576 wrote to memory of 2176	576	WScript.exe	31
PID 576 wrote to memory of 2176	576	WScript.exe	31
PID 576 wrote to memory of 2176	576	WScript.exe	31
PID 576 wrote to memory of 2176	576	WScript.exe	31
PID 2176 wrote to memory of 2880	2176	cmd.exe	33
PID 2176 wrote to memory of 2880	2176	cmd.exe	33
PID 2176 wrote to memory of 2880	2176	cmd.exe	33
PID 2176 wrote to memory of 2880	2176	cmd.exe	33
PID 2880 wrote to memory of 2568	2880	DllCommonsvc.exe	41
PID 2880 wrote to memory of 2568	2880	DllCommonsvc.exe	41
PID 2880 wrote to memory of 2568	2880	DllCommonsvc.exe	41
PID 2880 wrote to memory of 2584	2880	DllCommonsvc.exe	42
PID 2880 wrote to memory of 2584	2880	DllCommonsvc.exe	42
PID 2880 wrote to memory of 2584	2880	DllCommonsvc.exe	42
PID 2880 wrote to memory of 2616	2880	DllCommonsvc.exe	43
PID 2880 wrote to memory of 2616	2880	DllCommonsvc.exe	43
PID 2880 wrote to memory of 2616	2880	DllCommonsvc.exe	43
PID 2880 wrote to memory of 1784	2880	DllCommonsvc.exe	47
PID 2880 wrote to memory of 1784	2880	DllCommonsvc.exe	47
PID 2880 wrote to memory of 1784	2880	DllCommonsvc.exe	47

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_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97115089b2d41c44ac3c1d97af46cde34204f406d1bf6f6052ba34620a02083b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1964
- 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:576
- - 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:2176
  - - 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:2880
    - - 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:2568
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Microsoft Games\taskhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2584
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\explorer.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2616
    - - C:\Program Files\Microsoft Games\taskhost.exe
        
        "C:\Program Files\Microsoft Games\taskhost.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Program Files\Microsoft Games\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\Microsoft Games\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2288

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 6 /tr "'C:\Program Files\Microsoft Games\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
6ac2ed9cec235474b2c5c20baea14972

SHA1
4663ebf7fb98e6d03739439c0e3a1f78999692e6

SHA256
7302730b7aa923ebe934042442c2667e275f364898f02ebe97611e38efe02b6a

SHA512
74cbd9229a34fe1b32b608a2df6c9a7a94d6d4d1c27b98eacbfd3f2a687da9da93d689736cb7cc78e0636ea04be34ed4a9857582cd50144a36eb6d29569b6f6c

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/1784-28-0x0000000000320000-0x0000000000430000-memory.dmp

Filesize
1.1MB

Download
memory/2584-43-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2584-44-0x0000000002970000-0x0000000002978000-memory.dmp

Filesize
32KB

Download
memory/2880-13-0x0000000000B60000-0x0000000000C70000-memory.dmp

Filesize
1.1MB

Download
memory/2880-14-0x0000000000340000-0x0000000000352000-memory.dmp

Filesize
72KB

Download
memory/2880-15-0x0000000000350000-0x000000000035C000-memory.dmp

Filesize
48KB

Download
memory/2880-16-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/2880-17-0x0000000000380000-0x000000000038C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads