crimsonrat | dbb9168502e819619e94d9dc211d5f4967d8083ac5f4f67742b926abb04e6676

General

Target

dbb9168502e819619e94d9dc211d5f4967d8083ac5f4f67742b926abb04e6676.bin.doc
Size

790KB
MD5

c7a3276763a5c1b13f93028aab5a6e73
SHA1

c2844b69a36b3be37f8db97b0afc051f6bf36671
SHA256

dbb9168502e819619e94d9dc211d5f4967d8083ac5f4f67742b926abb04e6676
SHA512

2ef8d3eb3f1368591666d9f85dddb210c05fe16569f3553086f42d7b82133669c5a9e7fe1263407bb54bb9f75216ef9fcb78348427e334ef74afd6e3f429c01a

Score

10^/10

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000100000001ab45-10.dat	family_crimsonrat
behavioral2/files/0x000100000001ab45-9.dat	family_crimsonrat

CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
rat crimsonrat

Executes dropped EXE 1 IoCs

pid	Process
3272	ravidhtirad.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4712	WINWORD.EXE
4712	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3272	ravidhtirad.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	ravidhtirad.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4712	WINWORD.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE
4712	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 3272	4712	WINWORD.EXE	75
PID 4712 wrote to memory of 3272	4712	WINWORD.EXE	75

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\dbb9168502e819619e94d9dc211d5f4967d8083ac5f4f67742b926abb04e6676.bin.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4712
- C:\ProgramData\Dlymrdsa\ravidhtirad.exe
  C:\ProgramData\Dlymrdsa\ravidhtirad.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3272

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3272-11-0x00007FF857D60000-0x00007FF85874C000-memory.dmp

Filesize
9.9MB

Download
memory/3272-12-0x000001E182FA0000-0x000001E182FA1000-memory.dmp

Filesize
4KB

Download
memory/3272-14-0x000001E19DCF0000-0x000001E19DCF2000-memory.dmp

Filesize
8KB

Download
memory/4712-2-0x00007FF83FDE0000-0x00007FF83FDF0000-memory.dmp

Filesize
64KB

Download
memory/4712-3-0x00007FF83FDE0000-0x00007FF83FDF0000-memory.dmp

Filesize
64KB

Download
memory/4712-4-0x00007FF83FDE0000-0x00007FF83FDF0000-memory.dmp

Filesize
64KB

Download
memory/4712-5-0x00007FF8603D0000-0x00007FF860A07000-memory.dmp

Filesize
6.2MB

Download
memory/4712-6-0x00007FF83FDE0000-0x00007FF83FDF0000-memory.dmp

Filesize
64KB

Download
memory/4712-7-0x000001A3BC300000-0x000001A3BC304000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads