crimsonrat | dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba

Analysis

max time kernel
129s
max time network
138s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-01-2022 23:03

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General

Target

dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe
Size

84KB
MD5

b6e148ee1a2a3b460dd2a0adbf1dd39c
SHA1

ec0efbe8fd2fa5300164e9e4eded0d40da549c60
SHA256

dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba
SHA512

4b8c62ddfc7cd3e5ce1f8b5a1ba4a611ab1bfccf81d80cf2cfc831cffa1d7a4b6da0494616a53b419168bc3a324b57382d4a6186af083de6fc93d144c4503741

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0006000000013905-57.dat	family_crimsonrat
behavioral1/files/0x0006000000013905-56.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
572	dlrarhsiva.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Hdlharas\dlrarhsiva.exe	dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe
File opened for modification	C:\PROGRA~3\Hdlharas\dlrarhsiva.exe	dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.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

description	pid	Process	procid_target
PID 1592 wrote to memory of 572	1592	dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe	27
PID 1592 wrote to memory of 572	1592	dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe	27
PID 1592 wrote to memory of 572	1592	dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe	27

C:\Users\Admin\AppData\Local\Temp\dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe
"C:\Users\Admin\AppData\Local\Temp\dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1592
- C:\ProgramData\Hdlharas\dlrarhsiva.exe
  "C:\ProgramData\Hdlharas\dlrarhsiva.exe"
  2⤵
  - Executes dropped EXE
  PID:572

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

memory/572-58-0x0000000000300000-0x0000000000C14000-memory.dmp

Filesize
9.1MB

Download
memory/572-59-0x000007FEFBC11000-0x000007FEFBC13000-memory.dmp

Filesize
8KB

Download
memory/572-60-0x000000001B940000-0x000000001B942000-memory.dmp

Filesize
8KB

Download
memory/1592-54-0x00000000001E0000-0x00000000001FE000-memory.dmp

Filesize
120KB

Download
memory/1592-55-0x000000001B1E0000-0x000000001B1E2000-memory.dmp

Filesize
8KB

Download