crimsonrat | e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024

Analysis

max time kernel
132s
max time network
163s
platform
windows7_x64
resource
win7-en-20211208
submitted
21/01/2022, 23:01

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General

Target

e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe
Size

83KB
MD5

4663018621abd6313f9edb03c0737517
SHA1

a9dd4c0303b261344d469362bd80c4e366e79692
SHA256

e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024
SHA512

64d44f463b2d855c17b495ec056998b6f522f5078743621322f1cb574acf2ead445b0fe0f853a420941dfae2c09f5965ea383e48af74479d9c6c5a14c44a8f55

Score

10^/10

crimsonrat rat

Malware Config

Signatures

CrimsonRAT Main Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012284-58.dat	family_crimsonrat
behavioral1/files/0x0007000000012284-59.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
1552	dlrarhsiva.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Hdlharas\dlrarhsiva.exe	e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe
File opened for modification	C:\PROGRA~3\Hdlharas\dlrarhsiva.exe	e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.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 2008 wrote to memory of 1552	2008	e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe	29
PID 2008 wrote to memory of 1552	2008	e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe	29
PID 2008 wrote to memory of 1552	2008	e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe	29

C:\Users\Admin\AppData\Local\Temp\e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe
"C:\Users\Admin\AppData\Local\Temp\e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2008
- C:\ProgramData\Hdlharas\dlrarhsiva.exe
  "C:\ProgramData\Hdlharas\dlrarhsiva.exe"
  2⤵
  - Executes dropped EXE
  PID:1552

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/1552-60-0x000007FEF29E0000-0x000007FEF3A76000-memory.dmp

Filesize
16.6MB

Download
memory/1552-61-0x0000000002870000-0x0000000002872000-memory.dmp

Filesize
8KB

Download
memory/1552-62-0x0000000002876000-0x0000000002895000-memory.dmp

Filesize
124KB

Download
memory/2008-55-0x00000000002C0000-0x0000000000340000-memory.dmp

Filesize
512KB

Download
memory/2008-56-0x000007FEF29E0000-0x000007FEF3A76000-memory.dmp

Filesize
16.6MB

Download
memory/2008-57-0x00000000002C0000-0x0000000000340000-memory.dmp

Filesize
512KB

Download