a2e50b25ffd9d8bfea5df9be9407eafffc89bd797acd334e7346a965f141a410

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26-05-2024 04:26

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General

Target

2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe
Size

45KB
MD5

6729a0e2d812fdf35d618e89c285348d
SHA1

03b13451f778777d9a581d21077d2960095b2ca6
SHA256

a2e50b25ffd9d8bfea5df9be9407eafffc89bd797acd334e7346a965f141a410
SHA512

dcb31ed55e06037c6d5f1f0a141aa95c4b3978516131c3f401fdf5333177592b4d6b2059e60a69ea0300625e9658f0ceaa7e9cfac04b1a5edcdc80c37a06e151
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPT:P6QFElP6k+MRQMOtEvwDpjBQpVX+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3364-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023278-13.dat	CryptoLocker_rule2
behavioral2/memory/3364-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3364-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023278-13.dat	CryptoLocker_set1
behavioral2/memory/3364-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2992-26-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2992	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 3364 wrote to memory of 2992	3364	2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe	83
PID 3364 wrote to memory of 2992	3364	2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe	83
PID 3364 wrote to memory of 2992	3364	2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_6729a0e2d812fdf35d618e89c285348d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2992

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
46KB

MD5
7af22f2822f5eba84541093ffdd6956f

SHA1
4c8aae2c220e9bc420edeacdba67975e08c42ca8

SHA256
89dec282ec75e7fd6e1f5aea8f9ddf5ec57fec030440e123ef7a58e21bc34624

SHA512
32fcb576c38899e132698555f07c8a70469d48207083725f1dce425f69c773ce476ef7f3bc609ee72bc32dd72a0242c951f8ef17db4c7334d84058782b9b8496

Download Submit
memory/2992-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2992-25-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2992-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3364-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3364-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3364-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3364-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3364-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download