darkcomet | 8d4c4bbf6f75b051c23697d5e312999e9c15ca3c53a8c4aa844cb77fd7bc4b71

General

Target

12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe
Size

1.1MB
MD5

12eee5b20b3d43f8d415e84ac8be5146
SHA1

ddca6c026d4564922731d8927f202821b6082fc8
SHA256

8d4c4bbf6f75b051c23697d5e312999e9c15ca3c53a8c4aa844cb77fd7bc4b71
SHA512

7e02419baad099d7e1fe409898dbfb8d112bf7af7713b67e5d4234f8d816f54d9dc54c5cb774bfc463a0e397ba4ebef3dcb2296deda04bca4624a22ae2af8c96
SSDEEP

24576:DE9Xu7phS3T3ocrb4xa9Xy7miHCsm5ng9YRkpVk7:DbmotbaiLmwy

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

88.190.236.112:1604

Mutex

DC_MUTEX-2JX7Q1L

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
jwXKQ5E7XwZy
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3692 attrib.exe
4088 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4652 msdcsc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
3692	attrib.exe
4088	attrib.exe

pid	process
4652	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exevbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Startup Name = "C:\\Users\\Admin\\AppData\\Roaming\\server crypter.exe"	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe

description pid process target process

PID 440 set thread context of 352 440 12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe vbc.exe

description	pid	process	target process
PID 440 set thread context of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe

Drops file in Windows directory 2 IoCs

Processes:

attrib.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

Modifies registry class 1 IoCs

Processes:

vbc.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ vbc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	352	vbc.exe
Token: SeSecurityPrivilege	352	vbc.exe
Token: SeTakeOwnershipPrivilege	352	vbc.exe
Token: SeLoadDriverPrivilege	352	vbc.exe
Token: SeSystemProfilePrivilege	352	vbc.exe
Token: SeSystemtimePrivilege	352	vbc.exe
Token: SeProfSingleProcessPrivilege	352	vbc.exe
Token: SeIncBasePriorityPrivilege	352	vbc.exe
Token: SeCreatePagefilePrivilege	352	vbc.exe
Token: SeBackupPrivilege	352	vbc.exe
Token: SeRestorePrivilege	352	vbc.exe
Token: SeShutdownPrivilege	352	vbc.exe
Token: SeDebugPrivilege	352	vbc.exe
Token: SeSystemEnvironmentPrivilege	352	vbc.exe
Token: SeChangeNotifyPrivilege	352	vbc.exe
Token: SeRemoteShutdownPrivilege	352	vbc.exe
Token: SeUndockPrivilege	352	vbc.exe
Token: SeManageVolumePrivilege	352	vbc.exe
Token: SeImpersonatePrivilege	352	vbc.exe
Token: SeCreateGlobalPrivilege	352	vbc.exe
Token: 33	352	vbc.exe
Token: 34	352	vbc.exe
Token: 35	352	vbc.exe
Token: 36	352	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 440 wrote to memory of 352	440	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 352 wrote to memory of 4772	352	vbc.exe	cmd.exe
PID 352 wrote to memory of 4772	352	vbc.exe	cmd.exe
PID 352 wrote to memory of 4772	352	vbc.exe	cmd.exe
PID 352 wrote to memory of 4368	352	vbc.exe	cmd.exe
PID 352 wrote to memory of 4368	352	vbc.exe	cmd.exe
PID 352 wrote to memory of 4368	352	vbc.exe	cmd.exe
PID 4772 wrote to memory of 3692	4772	cmd.exe	attrib.exe
PID 4772 wrote to memory of 3692	4772	cmd.exe	attrib.exe
PID 4772 wrote to memory of 3692	4772	cmd.exe	attrib.exe
PID 4368 wrote to memory of 4088	4368	cmd.exe	attrib.exe
PID 4368 wrote to memory of 4088	4368	cmd.exe	attrib.exe
PID 4368 wrote to memory of 4088	4368	cmd.exe	attrib.exe
PID 352 wrote to memory of 4652	352	vbc.exe	msdcsc.exe
PID 352 wrote to memory of 4652	352	vbc.exe	msdcsc.exe
PID 352 wrote to memory of 4652	352	vbc.exe	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3692 attrib.exe
4088 attrib.exe

pid	process
3692	attrib.exe
4088	attrib.exe

C:\Users\Admin\AppData\Local\Temp\12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:440

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
2⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:352

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:4772

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:3692

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:4368

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:4088

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:4652

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1

T1064

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Hide Artifacts

2

T1564

Hidden Files and Directories

Scripting

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/352-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/352-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/352-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/352-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/352-10-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/352-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/440-0-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/440-1-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/440-2-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/440-8-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads