98f9015bfa21dc409441247251a42ed762d2fe00801bbfbefa71b530051f81ff

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 19:58

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General

Target

2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe
Size

136KB
MD5

b0d93e795d964bf438c8f76379a8221b
SHA1

d01720c65f973ae3355336f5e56b973bc678f24b
SHA256

98f9015bfa21dc409441247251a42ed762d2fe00801bbfbefa71b530051f81ff
SHA512

39f10ba6c92c9d94f064cf5e45fcd3fc8bd99a9f5bd14c95be5dd312cebf3d26553930a9efbed0e4d04230c178dc531f5ba778cdb9692e4f5504cacede321910
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwqWsviy6M:u6a++OtEvwDpj6zA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-12.dat	CryptoLocker_set1

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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3112	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3372 wrote to memory of 3112	3372	2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe	86
PID 3372 wrote to memory of 3112	3372	2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe	86
PID 3372 wrote to memory of 3112	3372	2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_b0d93e795d964bf438c8f76379a8221b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3112

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:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
136KB

MD5
d9460b7f134c5facf4cae05557129854

SHA1
8de87a97101cc766f0c7eac09885e6881a0ec534

SHA256
9aae68c1c9e3fe5cc788da150f2e05227151fab98aec5eeb4eabcaf54ed22365

SHA512
29024bf6ea8dc916ba555456772d7ad36ed5f4c2b1cc601551bb1297d678d43b58f5960d682b2d18bbcdc22329ab29f4fab7596d39e8333f43f5d199c862d7bf

Download Submit
memory/3112-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3372-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3372-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3372-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download