darkcomet | 9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

General

Target

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Size

350KB
MD5

7dee9ee8a1f01c84a03eec97edfefa90
SHA1

6ca55a33d811d84fedbff9278f2f8918284f5713
SHA256

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195
SHA512

9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22
SSDEEP

6144:WMI/jlS4kCwHL76nz9Q3uR5LTYYBIsHHN:WMQlS9Cwr79uLLTvBIY

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

10.10.0.100:1604

Mutex

DC_MUTEX-30LAHYZ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
al7BRWGr7y55
install
true
offline_keylogger
true
persistence
false
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:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

UPX dump on OEP (original entry point) 11 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	UPX
behavioral1/memory/2948-14-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2164-12-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-43-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-45-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-47-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-49-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-51-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-53-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral1/memory/2948-55-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
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

2508 attrib.exe
2972 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2948 msdcsc.exe

pid	process
2508	attrib.exe
2972	attrib.exe

pid	process
2948	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

pid	process
2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

UPX packed file 11 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
behavioral1/memory/2948-14-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2164-12-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-43-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-45-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-47-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-49-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-51-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-53-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral1/memory/2948-55-0x0000000000400000-0x00000000004EA000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

2948 msdcsc.exe

pid	process
2948	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSecurityPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeTakeOwnershipPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeLoadDriverPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemProfilePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemtimePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeProfSingleProcessPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeIncBasePriorityPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeCreatePagefilePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeBackupPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeRestorePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeShutdownPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeDebugPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemEnvironmentPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeChangeNotifyPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeRemoteShutdownPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeUndockPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeManageVolumePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeImpersonatePrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeCreateGlobalPrivilege	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 33	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 34	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 35	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeIncreaseQuotaPrivilege	2948	msdcsc.exe
Token: SeSecurityPrivilege	2948	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2948	msdcsc.exe
Token: SeLoadDriverPrivilege	2948	msdcsc.exe
Token: SeSystemProfilePrivilege	2948	msdcsc.exe
Token: SeSystemtimePrivilege	2948	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2948	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2948	msdcsc.exe
Token: SeCreatePagefilePrivilege	2948	msdcsc.exe
Token: SeBackupPrivilege	2948	msdcsc.exe
Token: SeRestorePrivilege	2948	msdcsc.exe
Token: SeShutdownPrivilege	2948	msdcsc.exe
Token: SeDebugPrivilege	2948	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2948	msdcsc.exe
Token: SeChangeNotifyPrivilege	2948	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2948	msdcsc.exe
Token: SeUndockPrivilege	2948	msdcsc.exe
Token: SeManageVolumePrivilege	2948	msdcsc.exe
Token: SeImpersonatePrivilege	2948	msdcsc.exe
Token: SeCreateGlobalPrivilege	2948	msdcsc.exe
Token: 33	2948	msdcsc.exe
Token: 34	2948	msdcsc.exe
Token: 35	2948	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2948 msdcsc.exe

pid	process
2948	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2164 wrote to memory of 2308	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 2308	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 2308	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 2308	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 1660	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 1660	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 1660	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2164 wrote to memory of 1660	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 2308 wrote to memory of 2508	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2508	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2508	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2508	2308	cmd.exe	attrib.exe
PID 1660 wrote to memory of 2972	1660	cmd.exe	attrib.exe
PID 1660 wrote to memory of 2972	1660	cmd.exe	attrib.exe
PID 1660 wrote to memory of 2972	1660	cmd.exe	attrib.exe
PID 1660 wrote to memory of 2972	1660	cmd.exe	attrib.exe
PID 2164 wrote to memory of 2948	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 2164 wrote to memory of 2948	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 2164 wrote to memory of 2948	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 2164 wrote to memory of 2948	2164	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe
PID 2948 wrote to memory of 2568	2948	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

2508 attrib.exe
2972 attrib.exe

pid	process
2508	attrib.exe
2972	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
"C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2308

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2508

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2972

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2948

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2568

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

2

T1564.001

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
350KB

MD5
7dee9ee8a1f01c84a03eec97edfefa90

SHA1
6ca55a33d811d84fedbff9278f2f8918284f5713

SHA256
9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

SHA512
9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22

Download Submit
memory/2164-1-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2164-13-0x0000000003440000-0x000000000352A000-memory.dmp

Filesize
936KB

Download
memory/2164-0-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2164-12-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2568-15-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2568-42-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/2948-14-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-16-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2948-43-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-45-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-47-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-49-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-51-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-53-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2948-55-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads