96dd854d17bbad6440d7b38d50f7fba63c4f0bfa5813510454576f4f39b7127d

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 20:36

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General

Target

2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
Size

46KB
MD5

655aa0838c3b556d5fff5a46fcb0070f
SHA1

1e353cd5797902a53a2c998f57637040fdc9009e
SHA256

96dd854d17bbad6440d7b38d50f7fba63c4f0bfa5813510454576f4f39b7127d
SHA512

d42bdcb51a304ecc635cb2e12209d2bf891680ac0ad485426ed0a07f3239e05590641d253ee259f0927f911440d6daeb32c8fbe2c10602eacc84f5ca6b43584a
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRZr:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231e5-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231e5-12.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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4812	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 4628 wrote to memory of 4812	4628	2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe	82
PID 4628 wrote to memory of 4812	4628	2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe	82
PID 4628 wrote to memory of 4812	4628	2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4812

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
3b30079b587edf9244262b7f0eef666f

SHA1
d6074414b2dc220aa019c6aad2c3b2e36c4b2b40

SHA256
d4243773224468b10c4e467617452a8e68a53100b13dd357ca6584c3a6d79439

SHA512
c592d9756e354333f636d226c345928d4c89df05c6563172b560d84c077aae93bbbbe5404bf2ca6b4bdac98da5ad67d1902862305dc0d55420067e8d9f330522

Download Submit
memory/4628-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4628-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4628-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4812-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4812-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download