darkcomet | 9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201

General

Target

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
Size

408KB
MD5

c171355f55121ff719f5154f26a62a99
SHA1

804d0e75559bd804c199dfa87f5e2c76dfa552a5
SHA256

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201
SHA512

c23081efe058d881480d9f729993c9d40f538bf724b8edcfbc7f7b7abb7595b9fc0b27fbeb413bf340e56320ea08b5e3c0c94a858af3a64658289da41b08cc8f
SSDEEP

12288:kFj5x0oVQYQMhYfDiji+D17iOeklNv/VnhGqa:Aj3Kcji+DZreklNvthJ

Score

10^/10

darkcomet test-sucessful evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Test-Sucessful

C2

spitzfire.no-ip.org:25565

Mutex

DC_MUTEX-NYVYCRM

Attributes

InstallPath
MSDCSC\System32Updater.exe
gencode
fGhl1lsjQLhX
install
true
offline_keylogger
true
persistence
true
reg_key
System32Updaterdll

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

T1004

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\\System32Updater.exe"	vbc.exe

Executes dropped EXE 1 IoCs

Processes:

System32Updater.exe

pid process

4368 System32Updater.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2844 attrib.exe
3056 attrib.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4368	System32Updater.exe

pid	process
2844	attrib.exe
3056	attrib.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exevbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Product = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe"	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System32Updaterdll = "C:\\Windows\\system32\\MSDCSC\\System32Updater.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\System32Updater.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\System32Updater.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe

description pid process target process

PID 952 set thread context of 1248 952 9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe vbc.exe

description	pid	process	target process
PID 952 set thread context of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.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

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	1248	vbc.exe
Token: SeSecurityPrivilege	1248	vbc.exe
Token: SeTakeOwnershipPrivilege	1248	vbc.exe
Token: SeLoadDriverPrivilege	1248	vbc.exe
Token: SeSystemProfilePrivilege	1248	vbc.exe
Token: SeSystemtimePrivilege	1248	vbc.exe
Token: SeProfSingleProcessPrivilege	1248	vbc.exe
Token: SeIncBasePriorityPrivilege	1248	vbc.exe
Token: SeCreatePagefilePrivilege	1248	vbc.exe
Token: SeBackupPrivilege	1248	vbc.exe
Token: SeRestorePrivilege	1248	vbc.exe
Token: SeShutdownPrivilege	1248	vbc.exe
Token: SeDebugPrivilege	1248	vbc.exe
Token: SeSystemEnvironmentPrivilege	1248	vbc.exe
Token: SeChangeNotifyPrivilege	1248	vbc.exe
Token: SeRemoteShutdownPrivilege	1248	vbc.exe
Token: SeUndockPrivilege	1248	vbc.exe
Token: SeManageVolumePrivilege	1248	vbc.exe
Token: SeImpersonatePrivilege	1248	vbc.exe
Token: SeCreateGlobalPrivilege	1248	vbc.exe
Token: 33	1248	vbc.exe
Token: 34	1248	vbc.exe
Token: 35	1248	vbc.exe
Token: 36	1248	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 952 wrote to memory of 1248	952	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1248 wrote to memory of 1360	1248	vbc.exe	cmd.exe
PID 1248 wrote to memory of 1360	1248	vbc.exe	cmd.exe
PID 1248 wrote to memory of 1360	1248	vbc.exe	cmd.exe
PID 1248 wrote to memory of 1052	1248	vbc.exe	cmd.exe
PID 1248 wrote to memory of 1052	1248	vbc.exe	cmd.exe
PID 1248 wrote to memory of 1052	1248	vbc.exe	cmd.exe
PID 1360 wrote to memory of 2844	1360	cmd.exe	attrib.exe
PID 1360 wrote to memory of 2844	1360	cmd.exe	attrib.exe
PID 1360 wrote to memory of 2844	1360	cmd.exe	attrib.exe
PID 1052 wrote to memory of 3056	1052	cmd.exe	attrib.exe
PID 1052 wrote to memory of 3056	1052	cmd.exe	attrib.exe
PID 1052 wrote to memory of 3056	1052	cmd.exe	attrib.exe
PID 1248 wrote to memory of 4368	1248	vbc.exe	System32Updater.exe
PID 1248 wrote to memory of 4368	1248	vbc.exe	System32Updater.exe
PID 1248 wrote to memory of 4368	1248	vbc.exe	System32Updater.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2844 attrib.exe
3056 attrib.exe

pid	process
2844	attrib.exe
3056	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
"C:\Users\Admin\AppData\Local\Temp\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:952

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:1248

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:1360

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:2844

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:1052

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:3056

C:\Windows\SysWOW64\MSDCSC\System32Updater.exe
"C:\Windows\system32\MSDCSC\System32Updater.exe"
3⤵
- Executes dropped EXE
PID:4368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Scripting

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\MSDCSC\System32Updater.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Windows\SysWOW64\MSDCSC\System32Updater.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/952-137-0x00000000747D0000-0x0000000074D81000-memory.dmp

Filesize
5.7MB

Download
memory/952-132-0x00000000747D0000-0x0000000074D81000-memory.dmp

Filesize
5.7MB

Download
memory/1052-140-0x0000000000000000-mapping.dmp

Download
memory/1248-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1248-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1248-135-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1248-134-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1248-133-0x0000000000000000-mapping.dmp

Download
memory/1248-146-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1360-139-0x0000000000000000-mapping.dmp

Download
memory/2844-141-0x0000000000000000-mapping.dmp

Download
memory/3056-142-0x0000000000000000-mapping.dmp

Download
memory/4368-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads