crimsonrat | 0afb5b3572320c62a1cf10f98cea1f27ddb67fa4b8453f41c7a43faaaa48042e

General

Target

nisha arora sharma.exe
Size

1.1MB
MD5

29fca616297a9c37e800cdc7b654bc6a
SHA1

40e353837ce0924b3b86badabfafe7597929aff9
SHA256

f29895d3fd197101aa284f5076a40e4e951614a7faaf214254488879b2e235f3
SHA512

2532bbce592e94a8eac3668da048dc87ccf632cdc65d2edfeda380f767e71f21854fa53354463b1d980fdedeab1ec5ac11f244da035c8f66e9a14397adf0fcb1

Score

10^/10

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000001ab31-121.dat	family_crimsonrat
behavioral2/files/0x000600000001ab31-122.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
3000	udhgariwe.exe

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

System Information Discovery
T1082

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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
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

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000_Classes\Local Settings	nisha arora sharma.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3252	WINWORD.EXE
3252	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	udhgariwe.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE
3252	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 3000	3064	nisha arora sharma.exe	69
PID 3064 wrote to memory of 3000	3064	nisha arora sharma.exe	69
PID 3064 wrote to memory of 3252	3064	nisha arora sharma.exe	72
PID 3064 wrote to memory of 3252	3064	nisha arora sharma.exe	72

C:\Users\Admin\AppData\Local\Temp\nisha arora sharma.exe
"C:\Users\Admin\AppData\Local\Temp\nisha arora sharma.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3064
- C:\ProgramData\Dathlas\udhgariwe.exe
  "C:\ProgramData\Dathlas\udhgariwe.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3000
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\nisha arora sharma_6 .docx" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:3252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3000-123-0x000002BE2D4D0000-0x000002BE2DE78000-memory.dmp

Filesize
9.7MB

Download
memory/3000-124-0x000002BE2E1A0000-0x000002BE2E1A2000-memory.dmp

Filesize
8KB

Download
memory/3064-118-0x0000000002FE0000-0x0000000002FE2000-memory.dmp

Filesize
8KB

Download
memory/3064-120-0x0000000002FE2000-0x0000000002FE4000-memory.dmp

Filesize
8KB

Download
memory/3252-127-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-126-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-128-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-131-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-132-0x00007FFCAD840000-0x00007FFCAD850000-memory.dmp

Filesize
64KB

Download
memory/3252-133-0x00007FFCAD840000-0x00007FFCAD850000-memory.dmp

Filesize
64KB

Download
memory/3252-125-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-354-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-357-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-356-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download
memory/3252-355-0x00007FFCB13B0000-0x00007FFCB13C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads