8efd203cb756c7fd4f09e8a1624a55a1306d15d746a4661a620d29ac52f0fc0d

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
22-02-2024 12:29

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General

Target

2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe
Size

89KB
MD5

217439cd75149697c1ef3a69ce38b004
SHA1

95dd8c45f8ed14c46987f9574fad74aea5bd9223
SHA256

8efd203cb756c7fd4f09e8a1624a55a1306d15d746a4661a620d29ac52f0fc0d
SHA512

64726fb3648d9ddda615db99acb2f10705462cfcdee87a0108b1c442e2bf473734fe70843043c21ce6ddc2b73429958dca7eaf513c90da8caad6fabf3fe19c6f
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgV:V6a+pOtEvwDpjtzR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1076	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 1532 wrote to memory of 1076	1532	2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe	87
PID 1532 wrote to memory of 1076	1532	2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe	87
PID 1532 wrote to memory of 1076	1532	2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_217439cd75149697c1ef3a69ce38b004_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1076

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
89KB

MD5
11009f35b07ed062f80b21a01dacebb1

SHA1
94a5df7fc497e6f330a026a840a3de7a4594a618

SHA256
d0fa91c641ecf10f7224ae877ed60cbe15329a4e20390cac01c7a7e77e0c3b50

SHA512
2b1a748b3c881e766ffb5ed36578c42a5a6c685f618c8c36f904ca7e31019708a59d727e435acb30477be97b21a416a502b7c7e28a184b2872944bcd65b899a2

Download Submit
memory/1076-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1076-19-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/1532-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1532-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1532-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download