72f36747e6430e28bc8181fc9f0149445383ba96afcb23e455981241f1da2c03

Analysis

max time kernel
150s
max time network
151s
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, 22:53

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General

Target

2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe
Size

39KB
MD5

ada105113dca369fdef4892ae59194be
SHA1

4604b2fadb19a51f1c4671d5c9696ef9cd993c4f
SHA256

72f36747e6430e28bc8181fc9f0149445383ba96afcb23e455981241f1da2c03
SHA512

0acbc6d1fad0d6631e002e0f1bad96ccd8a742c70ef9523786888d34955548a61c22f351870d7b1798373d03b3f330aba811ea16009313626ea84d35396a8ba1
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlmoH1QeA:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1132	retln.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 2092 wrote to memory of 1132	2092	2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe	90
PID 2092 wrote to memory of 1132	2092	2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe	90
PID 2092 wrote to memory of 1132	2092	2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_ada105113dca369fdef4892ae59194be_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1132

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\retln.exe

Filesize
39KB

MD5
f548655385828ffbe97d92d2639d0a2d

SHA1
a15e660ff5abc9ca61fb86c132f499001e06caf9

SHA256
f5d04dbc1d5bf8e788d8d662ff9dcd1a0dc6fa32d3cc18f41d2c7de1891615a1

SHA512
166d0865bc7add6bd9476ce921da2809979b45ae30b46f1f58a93b809b1f808f0b35be7b73ec944683be834809778c124e42bb2fffa6340a7838389b3c496897

Download Submit
memory/1132-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2092-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2092-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2092-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download