crimsonrat | dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba

Analysis

max time kernel
19s
max time network
21s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 13:39

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General

Target

CrimsonRAT.exe
Size

84KB
MD5

b6e148ee1a2a3b460dd2a0adbf1dd39c
SHA1

ec0efbe8fd2fa5300164e9e4eded0d40da549c60
SHA256

dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba
SHA512

4b8c62ddfc7cd3e5ce1f8b5a1ba4a611ab1bfccf81d80cf2cfc831cffa1d7a4b6da0494616a53b419168bc3a324b57382d4a6186af083de6fc93d144c4503741
SSDEEP

1536:IjoAILD000jsdtP66K3uch3bCuExwwSV712fRp1Oo2IeG:IqLD000wD6VRhLbzwSv2H1beG

Score

10^/10

crimsonrat rat

Malware Config

Extracted

Family

crimsonrat

185.136.161.124

Signatures

CrimsonRAT main payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-25.dat	family_crimsonrat
behavioral2/files/0x00070000000231f9-33.dat	family_crimsonrat

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	CrimsonRAT.exe

Executes dropped EXE 1 IoCs

pid	Process
3092	dlrarhsiva.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 3092	992	CrimsonRAT.exe	84
PID 992 wrote to memory of 3092	992	CrimsonRAT.exe	84

C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe
"C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:992
- C:\ProgramData\Hdlharas\dlrarhsiva.exe
  "C:\ProgramData\Hdlharas\dlrarhsiva.exe"
  2⤵
  - Executes dropped EXE
  PID:3092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Hdlharas\dlrarhsiva.exe

Filesize
4.9MB

MD5
d3603c3613f8fecdc0c15edda239d8ae

SHA1
d1467b8b58a139866d432bc45c31469bab94383c

SHA256
5464f0dada06805283631741d73b775249f08b6a76ee15c10175a3b628963877

SHA512
34d516a8d408bf63c79231870481cd2de2cf2e1651c949ee7b5904e217be7622700c74f8a9be3b88a846351029cdf8b4067c4582cceeb5417ebcca2cbba9b321

Download Submit
C:\ProgramData\Hdlharas\dlrarhsiva.exe

Filesize
384KB

MD5
534b9391200855b698e894a71e5ba3fa

SHA1
6a05233273305ef5c21a75750214cb808aac983f

SHA256
0df0a7941a95e86b6d6dba9d26a592c16feaf4a80bb6e29ef602acc0fa44f264

SHA512
2bf8264fe254e061f13ebd8d2d174d0121c886a4ccf6e3b815036125a5117a475014200e897896e6627260f2fb4d2dc243814d70ec51e9225db547f744841fdf

Download Submit
C:\ProgramData\Hdlharas\mdkhm.zip

Filesize
56KB

MD5
b635f6f767e485c7e17833411d567712

SHA1
5a9cbdca7794aae308c44edfa7a1ff5b155e4aa8

SHA256
6838286fb88e9e4e68882601a13fa770f1b510a0a86389b6a29070a129bf2e5e

SHA512
551ba05bd44e66685f359802b35a8c9775792a12844906b4b53e1a000d56624c6db323754331c9f399072790991c1b256d9114a50fb78111652a1c973d2880af

Download Submit
memory/992-0-0x000002064E420000-0x000002064E43E000-memory.dmp

Filesize
120KB

Download
memory/992-1-0x00007FFD914D0000-0x00007FFD91F91000-memory.dmp

Filesize
10.8MB

Download
memory/992-2-0x0000020668A70000-0x0000020668A80000-memory.dmp

Filesize
64KB

Download
memory/992-38-0x00007FFD914D0000-0x00007FFD91F91000-memory.dmp

Filesize
10.8MB

Download
memory/3092-34-0x00007FFD914D0000-0x00007FFD91F91000-memory.dmp

Filesize
10.8MB

Download
memory/3092-35-0x000001A72DE80000-0x000001A72E794000-memory.dmp

Filesize
9.1MB

Download
memory/3092-36-0x000001A748E70000-0x000001A748E80000-memory.dmp

Filesize
64KB

Download