8fbdd1bb37ce006e5cf1db03ae3996d0c62c6fbe8be90734db0d8fff82bafebf

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 09:27

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General

Target

2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe
Size

90KB
MD5

08167d75e7e9036cc7968e81511b80e8
SHA1

528538f9eb509d7560587f4243fad2d9f5d55cba
SHA256

8fbdd1bb37ce006e5cf1db03ae3996d0c62c6fbe8be90734db0d8fff82bafebf
SHA512

0c36e2bcfe4e7af841eb9597a4ebec043af6bc3f55a969d74699b6f2a63cf3eff0f462ac8d315f7e65f010fc429bf901e6094b7d4d37c6347c72790f0de9eca9
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgY:V6a+pOtEvwDpjtzU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5ae-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5ae-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3456	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 3516 wrote to memory of 3456	3516	2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe	92
PID 3516 wrote to memory of 3456	3516	2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe	92
PID 3516 wrote to memory of 3456	3516	2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_08167d75e7e9036cc7968e81511b80e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3456

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
90KB

MD5
16916a41c824b50cadc186817d97f29c

SHA1
9b90a7983fb1f183688b4e898baa2075565c633b

SHA256
4f56fc46e4046bbbe087da9c20a45d2ad25d428dbd6fb58385cdf5b3da776551

SHA512
16307eeb126ce28696d8a652932136afa5b6d380ca657fb5ff654f52026ba067113bf6e9fbb1c20dd31fe574b483aa95b364c749df60215c2b9aacd7cd5b2e41

Download Submit
memory/3456-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3456-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3516-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3516-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3516-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download