2e69651f73d58bb27cc188fa63f521a1672c6ce81622d154af3f738f80835d3b

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 06:24

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General

Target

2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe
Size

45KB
MD5

15ad0ab7df61372b4c48e3873441aad0
SHA1

40e4f119e0aca11d431e38c2f029352e6c79c2c3
SHA256

2e69651f73d58bb27cc188fa63f521a1672c6ce81622d154af3f738f80835d3b
SHA512

76e53dad9860d7cd27cfac8885432b55ac977402021f6e9b76d965c591c27fc25ba0018145999eaffbb10796865fbc09fe92faa3e598a9dd16f07692af876b57
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MomF:qmbhXDmjr5MOtEvwDpj5cDtKkQZQa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3412-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023218-13.dat	CryptoLocker_rule2
behavioral2/memory/3412-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3412-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3412-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023218-13.dat	UPX
behavioral2/memory/3412-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2104	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 3412 wrote to memory of 2104	3412	2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe	90
PID 3412 wrote to memory of 2104	3412	2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe	90
PID 3412 wrote to memory of 2104	3412	2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_15ad0ab7df61372b4c48e3873441aad0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2104

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
45KB

MD5
e6e713c95adffecee9dcecde3c8ec77a

SHA1
ac6ac5c94de1a014e9808a9803170becaa9cfebf

SHA256
e6a2f31dce46efb150a9ba7816d5411611326ecdfe3114adb691be39caa85883

SHA512
bb239e3339fdece88a95d9bd637bdb19842f003ca6737751d4cd8dee872ab6d6338c35c2643caf90dcf9218ae4b507daf2c976f158da9754ae7207575d06ae7b

Download Submit
memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2104-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2104-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3412-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3412-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3412-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3412-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3412-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download