f628af64085fdd5ba7f4bd9858c2c80b87af4adf15e0cb2ccfd00c8f68d2909a

Analysis

max time kernel
135s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 11:28

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General

Target

2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe
Size

51KB
MD5

16241f19bb745767bbce5a577b72e721
SHA1

bf6d2f79b0c136b303b71c45d217ec379373d9a1
SHA256

f628af64085fdd5ba7f4bd9858c2c80b87af4adf15e0cb2ccfd00c8f68d2909a
SHA512

a9348ec4b85cec56dee7af76e5906c2ec8d8a851f89985af68d441f2ea610fb9c7400673b57e0ec5c208324311a076ca12ef5c11519ce74f14cde201d2e645a0
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQ7suIlsw92KFXpQenhu2O:V6QFElP6n+gMQMOtEvwDpjeJQ7pojkRB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002311a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002311a-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4044	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 3976 wrote to memory of 4044	3976	2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe	83
PID 3976 wrote to memory of 4044	3976	2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe	83
PID 3976 wrote to memory of 4044	3976	2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_16241f19bb745767bbce5a577b72e721_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4044

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
51KB

MD5
3e26b138b0fcdc6b6d81ce991d870be9

SHA1
784ffc9267bca4fa56a66999123b1e7bc2715bdd

SHA256
0bd42d4825805ed708ce25acbcc33c3e4c93bb3f2e28116be93a9784d4c05426

SHA512
510fc99c8583a161eff563e6f6d256ddf34ad6b904a0adf71862f8149b785b6f8fd8a8a34ebd90f847dbafdee308ab11a19187a81fb448274ab0258621769a71

Download Submit
memory/3976-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3976-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3976-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download