ae18bf19e8f91be102de67596d41152c80fb47e46bd02926570f51d0f65e5253

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 07:47

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General

Target

2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe
Size

69KB
MD5

acc732efacec7f6770e2fcd8fb5fa794
SHA1

bb913f233c096f7cbaad08f29f29cb10b0e4b35e
SHA256

ae18bf19e8f91be102de67596d41152c80fb47e46bd02926570f51d0f65e5253
SHA512

90bd6e51002373b9aa61765a385da4c2457e13d4506393754da0105051866a3a0dc848b3508fd96000a4c3ad582d99fe9c122abe3060de736943a75f293413a6
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOui:DW60sllyWOtEvwDpjwF85U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4944-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023222-13.dat	CryptoLocker_rule2
behavioral2/files/0x0007000000023222-16.dat	CryptoLocker_rule2
behavioral2/memory/4944-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4944-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023222-13.dat	CryptoLocker_set1
behavioral2/files/0x0007000000023222-16.dat	CryptoLocker_set1
behavioral2/memory/4944-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4524	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 4944 wrote to memory of 4524	4944	2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe	84
PID 4944 wrote to memory of 4524	4944	2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe	84
PID 4944 wrote to memory of 4524	4944	2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_acc732efacec7f6770e2fcd8fb5fa794_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4524

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
70KB

MD5
266e4b46536afa63a56986d7532d95fa

SHA1
8c05e14cae48194f0848f1483f44d7d81e99007f

SHA256
43e028863aae813a921ceece7c3e15eccfd12b428626c14dbdb0fd5fca45978b

SHA512
21d4bfb7ef87d76604a2deb832f5511a4b7cd6d1e6f8b8f1deee43648d7af755749eb6be0083b9ed5df5fff33f2824fb39eeaef82b4c835b7887cf05a9bfe8cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
64KB

MD5
bb4cefe1d5261b45df29c0fe2b61b3e4

SHA1
446f2bb8261934ef2e9fa583afa12e32e2312cc6

SHA256
e30b6b18b96731df84b3ba46cb763ec035c21d2a141c3252c712aa099768fadf

SHA512
3abe25a14951083b589084b8e132b2d21591a49ceb8a0d1118b50e94e25c0f190827c1a31fae48845c87b436608505f3573388cbef9a3132ad37328e7afeffac

Download Submit
memory/4524-19-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4524-21-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4944-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4944-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4944-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4944-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4944-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download