darkcomet | 3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

Analysis

max time kernel
150s
max time network
142s
platform
windows7_x64
resource
win7v20201028
submitted
08-11-2020 18:01

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General

Target

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
Size

557KB
MD5

316ced1fc09909dff0b75efbd0da2ae0
SHA1

2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee
SHA256

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d
SHA512

fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Score

10^/10

darkcomet 2020okt999+++4 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

2020okt999+++4

sandyclark255.hopto.org:1605

Mutex

DC_MUTEX-D50H81E

Attributes

InstallPath
word64l.exe
gencode
0zgSCfjSH24W
install
true
offline_keylogger
true
password
hhhhhh
persistence
true
reg_key
winworde

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:

rwewqr.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\word64l.exe"	rwewqr.exe

Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

rwewqr.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts rwewqr.exe
Executes dropped EXE 3 IoCs

Processes:

rwewqr.exeword64l.exerwewqr.exe

pid process

1700 rwewqr.exe
1592 word64l.exe
436 rwewqr.exe
Loads dropped DLL 3 IoCs

Processes:

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exerwewqr.exeword64l.exe

pid process

288 3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
1700 rwewqr.exe
1592 word64l.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	rwewqr.exe

pid	process
1700	rwewqr.exe
1592	word64l.exe
436	rwewqr.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rwewqr.exerwewqr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\winworde = "C:\\Users\\Admin\\Documents\\word64l.exe"	rwewqr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\winworde = "C:\\Users\\Admin\\Documents\\word64l.exe"	rwewqr.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exeword64l.exe

description	pid	process	target process
PID 288 set thread context of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 1592 set thread context of 436	1592	word64l.exe	rwewqr.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exeword64l.exe

pid	process
288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
1592	word64l.exe
1592	word64l.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

Processes:

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exerwewqr.exeword64l.exerwewqr.exe

description	pid	process
Token: SeDebugPrivilege	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
Token: SeDebugPrivilege	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
Token: SeIncreaseQuotaPrivilege	1700	rwewqr.exe
Token: SeSecurityPrivilege	1700	rwewqr.exe
Token: SeTakeOwnershipPrivilege	1700	rwewqr.exe
Token: SeLoadDriverPrivilege	1700	rwewqr.exe
Token: SeSystemProfilePrivilege	1700	rwewqr.exe
Token: SeSystemtimePrivilege	1700	rwewqr.exe
Token: SeProfSingleProcessPrivilege	1700	rwewqr.exe
Token: SeIncBasePriorityPrivilege	1700	rwewqr.exe
Token: SeCreatePagefilePrivilege	1700	rwewqr.exe
Token: SeBackupPrivilege	1700	rwewqr.exe
Token: SeRestorePrivilege	1700	rwewqr.exe
Token: SeShutdownPrivilege	1700	rwewqr.exe
Token: SeDebugPrivilege	1700	rwewqr.exe
Token: SeSystemEnvironmentPrivilege	1700	rwewqr.exe
Token: SeChangeNotifyPrivilege	1700	rwewqr.exe
Token: SeRemoteShutdownPrivilege	1700	rwewqr.exe
Token: SeUndockPrivilege	1700	rwewqr.exe
Token: SeManageVolumePrivilege	1700	rwewqr.exe
Token: SeImpersonatePrivilege	1700	rwewqr.exe
Token: SeCreateGlobalPrivilege	1700	rwewqr.exe
Token: 33	1700	rwewqr.exe
Token: 34	1700	rwewqr.exe
Token: 35	1700	rwewqr.exe
Token: SeDebugPrivilege	1592	word64l.exe
Token: SeDebugPrivilege	1592	word64l.exe
Token: SeIncreaseQuotaPrivilege	436	rwewqr.exe
Token: SeSecurityPrivilege	436	rwewqr.exe
Token: SeTakeOwnershipPrivilege	436	rwewqr.exe
Token: SeLoadDriverPrivilege	436	rwewqr.exe
Token: SeSystemProfilePrivilege	436	rwewqr.exe
Token: SeSystemtimePrivilege	436	rwewqr.exe
Token: SeProfSingleProcessPrivilege	436	rwewqr.exe
Token: SeIncBasePriorityPrivilege	436	rwewqr.exe
Token: SeCreatePagefilePrivilege	436	rwewqr.exe
Token: SeBackupPrivilege	436	rwewqr.exe
Token: SeRestorePrivilege	436	rwewqr.exe
Token: SeShutdownPrivilege	436	rwewqr.exe
Token: SeDebugPrivilege	436	rwewqr.exe
Token: SeSystemEnvironmentPrivilege	436	rwewqr.exe
Token: SeChangeNotifyPrivilege	436	rwewqr.exe
Token: SeRemoteShutdownPrivilege	436	rwewqr.exe
Token: SeUndockPrivilege	436	rwewqr.exe
Token: SeManageVolumePrivilege	436	rwewqr.exe
Token: SeImpersonatePrivilege	436	rwewqr.exe
Token: SeCreateGlobalPrivilege	436	rwewqr.exe
Token: 33	436	rwewqr.exe
Token: 34	436	rwewqr.exe
Token: 35	436	rwewqr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rwewqr.exe

pid process

436 rwewqr.exe

pid	process
436	rwewqr.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exerwewqr.exeword64l.exerwewqr.exe

description	pid	process	target process
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 288 wrote to memory of 1700	288	3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe	rwewqr.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1376	1700	rwewqr.exe	notepad.exe
PID 1700 wrote to memory of 1592	1700	rwewqr.exe	word64l.exe
PID 1700 wrote to memory of 1592	1700	rwewqr.exe	word64l.exe
PID 1700 wrote to memory of 1592	1700	rwewqr.exe	word64l.exe
PID 1700 wrote to memory of 1592	1700	rwewqr.exe	word64l.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 1592 wrote to memory of 436	1592	word64l.exe	rwewqr.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe
PID 436 wrote to memory of 968	436	rwewqr.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe
"C:\Users\Admin\AppData\Local\Temp\3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:288

C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
"C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe"
2⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1376

C:\Users\Admin\Documents\word64l.exe
"C:\Users\Admin\Documents\word64l.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592

C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
"C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe"
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:436

C:\Windows\SysWOW64\notepad.exe
notepad
5⤵
PID:968

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
C:\Users\Admin\Documents\word64l.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
C:\Users\Admin\Documents\word64l.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
\Users\Admin\AppData\Local\Temp\0ed94wxm0ij5U6Fj\rwewqr.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
\Users\Admin\Documents\word64l.exe
MD5
316ced1fc09909dff0b75efbd0da2ae0

SHA1
2d5cb13b6c956f8a7b6307d7f629a56117d2d9ee

SHA256
3b93bbc5e1fe38dd279812cc19777eea51faf580c97d1713e8c54448f949647d

SHA512
fca713a6489bf4d87be23d9fbc6e9aa6fccf8a6329d1abed6e2e28bf2286f2fd78486cd77111eabed293f29fac81bfa1fbd9c8f9ebdb1452cd5af9eb41bdd5ad

Download Submit
memory/436-17-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/436-15-0x000000000048F888-mapping.dmp

Download
memory/968-19-0x0000000000000000-mapping.dmp

Download
memory/968-20-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/968-21-0x0000000000000000-mapping.dmp

Download
memory/1376-6-0x0000000000000000-mapping.dmp

Download
memory/1376-8-0x0000000000000000-mapping.dmp

Download
memory/1376-7-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/1592-10-0x0000000000000000-mapping.dmp

Download
memory/1700-1-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1700-2-0x000000000048F888-mapping.dmp

Download
memory/1700-4-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download