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

2648 attrib.exe
2596 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2300 msdcsc.exe
Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

2064 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2648	attrib.exe
2596	attrib.exe

pid	process
2300	msdcsc.exe

pid	process
2064	vbc.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-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\Startup Name = "C:\\Users\\Admin\\AppData\\Roaming\\server crypter.exe"	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\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 2280 set thread context of 2064 2280 12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe vbc.exe

description	pid	process	target process
PID 2280 set thread context of 2064	2280	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	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2064	vbc.exe
Token: SeSecurityPrivilege	2064	vbc.exe
Token: SeTakeOwnershipPrivilege	2064	vbc.exe
Token: SeLoadDriverPrivilege	2064	vbc.exe
Token: SeSystemProfilePrivilege	2064	vbc.exe
Token: SeSystemtimePrivilege	2064	vbc.exe
Token: SeProfSingleProcessPrivilege	2064	vbc.exe
Token: SeIncBasePriorityPrivilege	2064	vbc.exe
Token: SeCreatePagefilePrivilege	2064	vbc.exe
Token: SeBackupPrivilege	2064	vbc.exe
Token: SeRestorePrivilege	2064	vbc.exe
Token: SeShutdownPrivilege	2064	vbc.exe
Token: SeDebugPrivilege	2064	vbc.exe
Token: SeSystemEnvironmentPrivilege	2064	vbc.exe
Token: SeChangeNotifyPrivilege	2064	vbc.exe
Token: SeRemoteShutdownPrivilege	2064	vbc.exe
Token: SeUndockPrivilege	2064	vbc.exe
Token: SeManageVolumePrivilege	2064	vbc.exe
Token: SeImpersonatePrivilege	2064	vbc.exe
Token: SeCreateGlobalPrivilege	2064	vbc.exe
Token: 33	2064	vbc.exe
Token: 34	2064	vbc.exe
Token: 35	2064	vbc.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2280 wrote to memory of 2064	2280	12eee5b20b3d43f8d415e84ac8be5146_JaffaCakes118.exe	vbc.exe
PID 2064 wrote to memory of 2632	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2632	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2632	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2632	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2640	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2640	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2640	2064	vbc.exe	cmd.exe
PID 2064 wrote to memory of 2640	2064	vbc.exe	cmd.exe
PID 2640 wrote to memory of 2648	2640	cmd.exe	attrib.exe
PID 2640 wrote to memory of 2648	2640	cmd.exe	attrib.exe
PID 2640 wrote to memory of 2648	2640	cmd.exe	attrib.exe
PID 2640 wrote to memory of 2648	2640	cmd.exe	attrib.exe
PID 2632 wrote to memory of 2596	2632	cmd.exe	attrib.exe
PID 2632 wrote to memory of 2596	2632	cmd.exe	attrib.exe
PID 2632 wrote to memory of 2596	2632	cmd.exe	attrib.exe
PID 2632 wrote to memory of 2596	2632	cmd.exe	attrib.exe
PID 2064 wrote to memory of 2300	2064	vbc.exe	msdcsc.exe
PID 2064 wrote to memory of 2300	2064	vbc.exe	msdcsc.exe
PID 2064 wrote to memory of 2300	2064	vbc.exe	msdcsc.exe
PID 2064 wrote to memory of 2300	2064	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

2648 attrib.exe
2596 attrib.exe

pid	process
2648	attrib.exe
2596	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:2280

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
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2064

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:2632

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:2596

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:2640

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:2648

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:2300

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

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Downloads

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

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2064-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2064-6-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2064-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2064-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2064-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2064-19-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2280-0-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

Filesize
4KB

Download
memory/2280-1-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-2-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-5-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads