f8f7fddb1819d850db3effd561c1fa16841d875dd4c9416ea92df22950b17f93

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 11:26

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General

Target

2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe
Size

46KB
MD5

19e1ff5f8c26cdba46a5bb02d10a94f7
SHA1

10da5de99d44e76cd92bdcd57bece8fcba211e85
SHA256

f8f7fddb1819d850db3effd561c1fa16841d875dd4c9416ea92df22950b17f93
SHA512

79ebb93d3a1cacd6def827e41a2ea0dc2de044424dc1c3d04bb030036556ec5c57dd73254883b821d74fc5557f065e90f7caad5ac8712d7fe8bad96d92fb4da8
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkc5:P6Q0ElP6G+gJQMOtEvwDpjB8WMlf5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/116-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002320d-13.dat	CryptoLocker_rule2
behavioral2/memory/116-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4836-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4836-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/116-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002320d-13.dat	CryptoLocker_set1
behavioral2/memory/116-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4836-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4836-27-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4836	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 116 wrote to memory of 4836	116	2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe	88
PID 116 wrote to memory of 4836	116	2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe	88
PID 116 wrote to memory of 4836	116	2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_19e1ff5f8c26cdba46a5bb02d10a94f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4836

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
c56ab74c239d445463c6a8f59f1afc7b

SHA1
04359c2be93d87385ef3be27a3ef8fbd6b109372

SHA256
cfc96648aa0efb6434c2134d19fdf496fdf1753864ab706c3a727e0497764593

SHA512
564d592829c54931095cd63a9a6cb50de03667ae4c67f0a0777ac4a91d77f20fc589e3ad44585ada4ef26db8250e5d17f120031a772e8c11ee779e8e99cedbb5

Download Submit
memory/116-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/116-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/116-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/116-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/116-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4836-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4836-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4836-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4836-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download