dcrat | 10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 07:22

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General

Target

JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe
Size

1.3MB
MD5

49f38ae6b95713e8c45bd49b3160147b
SHA1

113af8362d50da0cef224cf3c40e01a332ee28c5
SHA256

10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f
SHA512

a19bba7cac9b42433522a8ac6300de99e913ea74235e4dedaf8de03e1c2536f75826c4fc4f86d068f749fce4d2e07092e3855071adee0494aa99214a6b506700
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	2676	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2928	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2492	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2752	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2640	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2672	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2476	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2172	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2104	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2008	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2992	2460	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	580	2460	schtasks.exe	35

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x000700000001949d-12.dat	dcrat
behavioral1/memory/2144-13-0x0000000000810000-0x0000000000920000-memory.dmp	dcrat
behavioral1/memory/1308-59-0x0000000000B40000-0x0000000000C50000-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
1996	powershell.exe
1804	powershell.exe
2952	powershell.exe
1272	powershell.exe
1960	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2144	DllCommonsvc.exe
1308	dwm.exe

Loads dropped DLL 2 IoCs

pid	Process
2484	cmd.exe
2484	cmd.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\Temp\dwm.exe	DllCommonsvc.exe
File created	C:\Program Files (x86)\Google\Temp\6cb0b6c459d5d3	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_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.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
2476	schtasks.exe
2172	schtasks.exe
2104	schtasks.exe
2008	schtasks.exe
2992	schtasks.exe
2676	schtasks.exe
2928	schtasks.exe
2672	schtasks.exe
580	schtasks.exe
2492	schtasks.exe
2752	schtasks.exe
2640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2144	DllCommonsvc.exe
2952	powershell.exe
1804	powershell.exe
1960	powershell.exe
1272	powershell.exe
1996	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	DllCommonsvc.exe
Token: SeDebugPrivilege	2952	powershell.exe
Token: SeDebugPrivilege	1804	powershell.exe
Token: SeDebugPrivilege	1960	powershell.exe
Token: SeDebugPrivilege	1272	powershell.exe
Token: SeDebugPrivilege	1996	powershell.exe
Token: SeDebugPrivilege	1308	dwm.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2368	2344	JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe	31
PID 2344 wrote to memory of 2368	2344	JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe	31
PID 2344 wrote to memory of 2368	2344	JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe	31
PID 2344 wrote to memory of 2368	2344	JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe	31
PID 2368 wrote to memory of 2484	2368	WScript.exe	32
PID 2368 wrote to memory of 2484	2368	WScript.exe	32
PID 2368 wrote to memory of 2484	2368	WScript.exe	32
PID 2368 wrote to memory of 2484	2368	WScript.exe	32
PID 2484 wrote to memory of 2144	2484	cmd.exe	34
PID 2484 wrote to memory of 2144	2484	cmd.exe	34
PID 2484 wrote to memory of 2144	2484	cmd.exe	34
PID 2484 wrote to memory of 2144	2484	cmd.exe	34
PID 2144 wrote to memory of 1996	2144	DllCommonsvc.exe	48
PID 2144 wrote to memory of 1996	2144	DllCommonsvc.exe	48
PID 2144 wrote to memory of 1996	2144	DllCommonsvc.exe	48
PID 2144 wrote to memory of 1804	2144	DllCommonsvc.exe	49
PID 2144 wrote to memory of 1804	2144	DllCommonsvc.exe	49
PID 2144 wrote to memory of 1804	2144	DllCommonsvc.exe	49
PID 2144 wrote to memory of 1272	2144	DllCommonsvc.exe	50
PID 2144 wrote to memory of 1272	2144	DllCommonsvc.exe	50
PID 2144 wrote to memory of 1272	2144	DllCommonsvc.exe	50
PID 2144 wrote to memory of 2952	2144	DllCommonsvc.exe	51
PID 2144 wrote to memory of 2952	2144	DllCommonsvc.exe	51
PID 2144 wrote to memory of 2952	2144	DllCommonsvc.exe	51
PID 2144 wrote to memory of 1960	2144	DllCommonsvc.exe	53
PID 2144 wrote to memory of 1960	2144	DllCommonsvc.exe	53
PID 2144 wrote to memory of 1960	2144	DllCommonsvc.exe	53
PID 2144 wrote to memory of 1588	2144	DllCommonsvc.exe	58
PID 2144 wrote to memory of 1588	2144	DllCommonsvc.exe	58
PID 2144 wrote to memory of 1588	2144	DllCommonsvc.exe	58
PID 1588 wrote to memory of 2572	1588	cmd.exe	60
PID 1588 wrote to memory of 2572	1588	cmd.exe	60
PID 1588 wrote to memory of 2572	1588	cmd.exe	60
PID 1588 wrote to memory of 1308	1588	cmd.exe	61
PID 1588 wrote to memory of 1308	1588	cmd.exe	61
PID 1588 wrote to memory of 1308	1588	cmd.exe	61

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_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_10f4f00bc80c27d3dd3d834617acd63662cc60278cd55c760aac003a6013f75f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344
- 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:2368
- - 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:2484
  - - 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:2144
    - - 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:1996
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\conhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1804
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Google\Temp\dwm.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1272
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\WmiPrvSE.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2952
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\conhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1960
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Nz8wEG0xkv.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1588
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:2572
      - C:\Program Files (x86)\Google\Temp\dwm.exe
        
        "C:\Program Files (x86)\Google\Temp\dwm.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1308

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 6 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Google\Temp\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2752

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\Temp\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Google\Temp\dwm.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 "WmiPrvSEW" /sc MINUTE /mo 14 /tr "'C:\providercommon\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2476

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\providercommon\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2172

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\providercommon\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2104

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 11 /tr "'C:\providercommon\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2992

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 7 /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:580

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\Nz8wEG0xkv.bat

Filesize
207B

MD5
61c9b761263463895fb3f9b44bb9f348

SHA1
def492228434e1716cbc3448e4a339e4e00909d2

SHA256
a2fea03f92fef833249f418ad8b76d40349f0ee0e0a3d4ae7012b2c8d9a625ee

SHA512
f25ab71c0c677096af70d1606dd63b2accdc80839357091e34150fe5762311817652fbb84fd9fed107fa5230e3c54b2564a4b1c8aff0fa7314ad14e302b3e486

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

Filesize
7KB

MD5
8f4853eafd81ac7b2455c5529c911700

SHA1
cbbcdcaec11e34f0fbbc0890bcf5ffa948cec76c

SHA256
f42e0aec064a334786422627c659640802e5f9e0dac78481767ed2f05d29d294

SHA512
9667d1398423cf9c5b6c561dab6bc707c1aecc1f41c9a64f2acd50bf5b1cf725de3557b2b48f3cc4f9f87741edfe616ef2c86c1185c75e66a2c6a4ae2c2f128d

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/1308-59-0x0000000000B40000-0x0000000000C50000-memory.dmp

Filesize
1.1MB

Download
memory/1960-45-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2144-13-0x0000000000810000-0x0000000000920000-memory.dmp

Filesize
1.1MB

Download
memory/2144-17-0x0000000000600000-0x000000000060C000-memory.dmp

Filesize
48KB

Download
memory/2144-16-0x00000000005F0000-0x00000000005FC000-memory.dmp

Filesize
48KB

Download
memory/2144-15-0x00000000005E0000-0x00000000005EC000-memory.dmp

Filesize
48KB

Download
memory/2144-14-0x00000000005D0000-0x00000000005E2000-memory.dmp

Filesize
72KB

Download
memory/2952-46-0x0000000001E20000-0x0000000001E28000-memory.dmp

Filesize
32KB

Download