a8271ab496d4f29b1860542db4265e77dce04b00d41e8df8dd4908c8c14107ee

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 09:47

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General

Target

2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe
Size

38KB
MD5

bce1070054341e451f49ddcc6e7ffbf9
SHA1

6586fc754a591ce1e7cc1b4a560296b0581a5662
SHA256

a8271ab496d4f29b1860542db4265e77dce04b00d41e8df8dd4908c8c14107ee
SHA512

b80dc30921f2c60de77f6caccc1c5d78f979caf995ac4df892fdffd91eae47206cd3aa388640e31b5b084884039f5ae69a3616d31f4425ab836cf0fffcd7c606
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLC00T:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/2012-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_set1
behavioral2/memory/2012-17-0x0000000000500000-0x000000000050B000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1628	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 2012 wrote to memory of 1628	2012	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	87
PID 2012 wrote to memory of 1628	2012	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	87
PID 2012 wrote to memory of 1628	2012	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1628

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
38KB

MD5
54ac7ea6911295d837d3458ace37fa06

SHA1
446f345fdcf1a2f4de8ef03bbb79e12f3131bba7

SHA256
2da7d9d297b9ef7a454292ace2eb64dae982e22d789b7e2c2ec73ff756ca60e6

SHA512
5ff026ec417028d526db8c0a272c427d5b7ac75df7cd369aefa94f57b0ab2e67ea9ebcfcbb28c2c6bb5216bddfd79427c56783c5eb258cb48e47e83e786ef764

Download Submit
memory/1628-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1628-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2012-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2012-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2012-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2012-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download