crimsonrat | e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584

Analysis

max time kernel
124s
max time network
145s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-01-2022 22:57

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General

Target

e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe
Size

89KB
MD5

c2fd45f6342fe183749eed303010965b
SHA1

7bc4e9aba5a79504ab85f15da2f7d15661777394
SHA256

e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584
SHA512

ebba30fb01bee91e02c2aae40cb6bbe7e6c20185b7d624ac96375ffd8e547ee07ed98ceddbeecb5c941c8c1318f951379d08873765e5e28f6449f94d718f64f6

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00060000000130dd-58.dat	family_crimsonrat
behavioral1/files/0x00060000000130dd-59.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
1804	dhrwarhsav.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Detharis\dhrwarhsav.exe	e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe
File opened for modification	C:\PROGRA~3\Detharis\dhrwarhsav.exe	e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.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 1116 wrote to memory of 1804	1116	e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe	29
PID 1116 wrote to memory of 1804	1116	e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe	29
PID 1116 wrote to memory of 1804	1116	e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe	29

C:\Users\Admin\AppData\Local\Temp\e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe
"C:\Users\Admin\AppData\Local\Temp\e63cd1c60fd8d9f2ab6714f371958621f9d500bb09ba3569d0435f8f38960584.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1116
- C:\ProgramData\Detharis\dhrwarhsav.exe
  "C:\ProgramData\Detharis\dhrwarhsav.exe"
  2⤵
  - Executes dropped EXE
  PID:1804

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/1116-55-0x0000000000590000-0x0000000000592000-memory.dmp

Filesize
8KB

Download
memory/1116-56-0x000007FEF2A50000-0x000007FEF3AE6000-memory.dmp

Filesize
16.6MB

Download
memory/1116-57-0x0000000000596000-0x00000000005B5000-memory.dmp

Filesize
124KB

Download
memory/1804-60-0x000007FEF2A50000-0x000007FEF3AE6000-memory.dmp

Filesize
16.6MB

Download
memory/1804-62-0x0000000000B46000-0x0000000000B65000-memory.dmp

Filesize
124KB

Download
memory/1804-61-0x0000000000B40000-0x0000000000B42000-memory.dmp

Filesize
8KB

Download