crimsonrat | bfcb56e41871cf6668c2699c3b0697913d0780bc0195a51ae036db7b991797d9

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-01-2022 23:13

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General

Target

khushi pics all/khushi.exe
Size

985KB
MD5

3cb7f596cbaa622e8b505335722ab558
SHA1

617df380f49c4017315f503c5947c88d80b4ab21
SHA256

1fdb5dd192e813f337adc21dfe4a31e1de10bd2bbb5b58ca51a6836b7e108953
SHA512

b3879f19e65ec0de247c6f835405e94362697fed09669edca22ba491e1c1cd7a5e82487c26324e43db00f9c4593f32efdd81549061cb46ae9d6df61b9d6ec9a6

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x000600000001265d-58.dat	family_crimsonrat
behavioral1/files/0x000600000001265d-57.dat	family_crimsonrat

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

Executes dropped EXE 1 IoCs

Processes:

widthacan.exe

pid	Process
676	widthacan.exe

Drops file in Program Files directory 2 IoCs

Processes:

khushi.exe

description	ioc	Process
File created	C:\PROGRA~3\Btharmis\widthacan.exe	khushi.exe
File opened for modification	C:\PROGRA~3\Btharmis\widthacan.exe	khushi.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

khushi.exe

description	pid	Process	procid_target
PID 1660 wrote to memory of 676	1660	khushi.exe	27
PID 1660 wrote to memory of 676	1660	khushi.exe	27
PID 1660 wrote to memory of 676	1660	khushi.exe	27

C:\Users\Admin\AppData\Local\Temp\khushi pics all\khushi.exe
"C:\Users\Admin\AppData\Local\Temp\khushi pics all\khushi.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1660
- C:\ProgramData\Btharmis\widthacan.exe
  "C:\ProgramData\Btharmis\widthacan.exe"
  2⤵
  - Executes dropped EXE
  PID:676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Btharmis\widthacan.exe

MD5
bebdda9a0c250cb9cc356864d38aa20c

SHA1
06ab93d7d22b209b163bfeed0c13535d69d391cc

SHA256
9e98fd3ad7527503b255a70ee461c02a3c9ef9aabdee3173d2f8fbb8c93d2d50

SHA512
3e83570473f8162f30b6c30a1ebade86f1600bce91b90a26880824560c5960ca6e66a21e19f26d89770b5673aa532b174749d1c9e018900f41733b694cf2abd9

Download Submit
C:\ProgramData\Btharmis\widthacan.exe

MD5
bebdda9a0c250cb9cc356864d38aa20c

SHA1
06ab93d7d22b209b163bfeed0c13535d69d391cc

SHA256
9e98fd3ad7527503b255a70ee461c02a3c9ef9aabdee3173d2f8fbb8c93d2d50

SHA512
3e83570473f8162f30b6c30a1ebade86f1600bce91b90a26880824560c5960ca6e66a21e19f26d89770b5673aa532b174749d1c9e018900f41733b694cf2abd9

Download Submit
memory/676-59-0x000007FEF1E70000-0x000007FEF2F06000-memory.dmp

Filesize
16.6MB

Download
memory/676-60-0x0000000002990000-0x0000000002992000-memory.dmp

Filesize
8KB

Download
memory/676-61-0x0000000002996000-0x00000000029B5000-memory.dmp

Filesize
124KB

Download
memory/1660-54-0x0000000000920000-0x0000000000922000-memory.dmp

Filesize
8KB

Download
memory/1660-55-0x000007FEF1E70000-0x000007FEF2F06000-memory.dmp

Filesize
16.6MB

Download
memory/1660-56-0x0000000000926000-0x0000000000945000-memory.dmp

Filesize
124KB

Download