b9aac144b90f9ef86e620fe73aa4ee72e13cae03d6963d8618f1932969266212

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05-06-2024 04:44

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General

Target

2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe
Size

74KB
MD5

afece5aa0d935567c650b1c4525f14c3
SHA1

b91cddb028b59bd212e839bf6bfd84c6241b17c6
SHA256

b9aac144b90f9ef86e620fe73aa4ee72e13cae03d6963d8618f1932969266212
SHA512

ff7b74165f60b61f61cde912e53a77d1627472ce879b17e8a45db42a4a3c042f818b5c632a3fccabc80af92cb148d72a07cf3280cfd464413a3603b1af751ce0
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsMq:u6QFElP6n+gWMOtEvwDpjJGYQbV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233f9-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233f9-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
764	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 4044 wrote to memory of 764	4044	2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe	82
PID 4044 wrote to memory of 764	4044	2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe	82
PID 4044 wrote to memory of 764	4044	2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_afece5aa0d935567c650b1c4525f14c3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:764

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
74KB

MD5
eea5793cbf899032ce545001fd3bf041

SHA1
205f0e8563914801744ac2f0921a63ea3a7a7649

SHA256
2e1e693f40417f74141af2192f93301e379817e144ccf9a1fc609440ad5dba8b

SHA512
9151c03ebf52ffe82a559467bba1f0e1510e4feeecb4e7fdc308733e99911bd4efefedb5b254970b205acc9209487d79ae0be36e7462856ce5ba6a6b2008456b

Download Submit
memory/764-23-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/764-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4044-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4044-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4044-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download