d8b6960a2045191a65a9b155e4f9ec381afeca818ca9e312b57b22aa823644cf

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 12:47

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General

Target

2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe
Size

48KB
MD5

95c2fc7d4648f1c247922807edf9c77c
SHA1

bd4a63bbe02942fc1da36b8e8a8ebc1775e2ea15
SHA256

d8b6960a2045191a65a9b155e4f9ec381afeca818ca9e312b57b22aa823644cf
SHA512

695bc67dbc6ec4dffca46c6ccd923c4a0817b428383748cc1db3ddd49332aeefce5a20740635b0c6ba92c032ebf7ffcaca09d083194eaa066acd2a265676a062
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUB:79mqyNhQMOtEvwDpjBzckqSs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002341f-13.dat	CryptoLocker_rule2
behavioral2/memory/5100-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4844-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002341f-13.dat	CryptoLocker_set1
behavioral2/memory/5100-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4844-18-0x0000000000500000-0x000000000050F000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5100	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 4844 wrote to memory of 5100	4844	2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe	83
PID 4844 wrote to memory of 5100	4844	2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe	83
PID 4844 wrote to memory of 5100	4844	2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_95c2fc7d4648f1c247922807edf9c77c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5100

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
48KB

MD5
7050245b61400db4870d4626652632f8

SHA1
4aef53464e7f536448194a95b9b8d602cd64c67d

SHA256
d20b10fe87857d40b499ef53d0e14977567b41d96f23af2622523c681b728d2e

SHA512
01048035e2f60eba1293b8b96c8c7fc91126d14e56ab7052ca2316e18482f1967d1c58b2774b868af687683f3512f045735a501f9a78f315491b0f3bfa23f1fe

Download Submit
memory/4844-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4844-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4844-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4844-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4844-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5100-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5100-20-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/5100-26-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download