1e29e73c8861fa2b251562568a53cfdcee3344b3dcbc603a089d8657246491aa

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2024, 09:42

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General

Target

2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe
Size

47KB
MD5

425069423a7cf0b751fa075e665338b8
SHA1

929b5c0407600925dff96384178ea86c0d6eb01b
SHA256

1e29e73c8861fa2b251562568a53cfdcee3344b3dcbc603a089d8657246491aa
SHA512

f65fed88fa2e55cf3feff7f6d9407fbdc2cddef106107c6a3a11bf8b53e6c37421990fa8aca8932bca9b09f8700eeb7e844f6f1c517b3f3bbd915299c67d3ca1
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTB+Yu:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023211-13.dat	CryptoLocker_rule2
behavioral2/memory/4548-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3320-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3320-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4548-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3320-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3320-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000b000000023211-13.dat	UPX
behavioral2/memory/4548-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3320-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3320-27-0x0000000000500000-0x0000000000510000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3320	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 4548 wrote to memory of 3320	4548	2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe	89
PID 4548 wrote to memory of 3320	4548	2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe	89
PID 4548 wrote to memory of 3320	4548	2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_425069423a7cf0b751fa075e665338b8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3320

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
47KB

MD5
1e1b9497b6f1ec1fd0d11276cad694b3

SHA1
47f3b9cf017e4ce3e73b59f59112108c45b8b4fe

SHA256
aa5f78bef0cb30446af84220c27f593585e107073c157595f8478d71b6b87ec0

SHA512
9cf7c314338e9e502b732740bc6e0d621be35db47906af7ee00bc35f32ac804f2022a5d4316f9f62a67a5fffeca4e4eb2ba8a03a67bc39dc73f1faee6874df28

Download Submit
memory/3320-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3320-21-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/3320-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3320-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4548-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4548-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4548-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4548-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4548-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download