7ccb4a45effeaec94b7ef1094c4768256f960778028577fbfb18307d81df838a

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 10:29

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General

Target

2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe
Size

44KB
MD5

57f18cc631ff804f9029cd82eb635d62
SHA1

0cc1e2aec05eb8251827a41570cf80c55b958257
SHA256

7ccb4a45effeaec94b7ef1094c4768256f960778028577fbfb18307d81df838a
SHA512

55dc0b44722af81d0dd7d581c654f0ccc042aadad66bab07c62f986aeaf3c87d5965dcf8e659ac8220e9dd950f21753101cf0b8eca2ed4a34287d4c041b3999d
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My1j1:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4164-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231d9-13.dat	CryptoLocker_rule2
behavioral2/memory/4164-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2336-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4164-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231d9-13.dat	CryptoLocker_set1
behavioral2/memory/4164-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2336-17-0x0000000000500000-0x000000000050B000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2336	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 4164 wrote to memory of 2336	4164	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	85
PID 4164 wrote to memory of 2336	4164	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	85
PID 4164 wrote to memory of 2336	4164	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

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
44KB

MD5
ed4acd1efd4e0fe1727b9ba09a089678

SHA1
b5d71ebc5b727f84b9b15ebf40db8ae0c97b4c43

SHA256
26616dbf8612e82fec5b28711a47683784c1a537d8219d543d73998e130196e7

SHA512
5ec59957d62e7dd24aebc4f5934a143d895648114ba832d7dfed0bb118afa0b79a63afb268e72ef87a895e60e6f736c76ec0699524960130377d6c0e3fd7c6a4

Download Submit
memory/2336-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2336-20-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2336-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4164-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4164-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4164-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4164-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4164-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download