46cb9ac341c674d9cf49a395fbdb097327979e325b5781a12a0a2ca3dc63e38d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 01:27

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General

Target

2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
Size

47KB
MD5

772ca6322affb9588f43f2d038e5b2df
SHA1

f7b6334bb694accdaa3b367cf7812b16222eeb69
SHA256

46cb9ac341c674d9cf49a395fbdb097327979e325b5781a12a0a2ca3dc63e38d
SHA512

95d78ac923eb17df630bb1792b6021ba4ed3941faef628600483df7cb25b326d828f63d348b40c7d9bdef087fa87414502fa3584304f8025c18a56bb679e86ab
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WtyU8jL:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/624-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/624-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002322f-16.dat	CryptoLocker_rule2
behavioral2/files/0x000700000002322f-13.dat	CryptoLocker_rule2
behavioral2/memory/4572-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/624-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4572-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/624-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/624-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002322f-16.dat	UPX
behavioral2/files/0x000700000002322f-13.dat	UPX
behavioral2/memory/4572-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4572	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 624 wrote to memory of 4572	624	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	18
PID 624 wrote to memory of 4572	624	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	18
PID 624 wrote to memory of 4572	624	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	18

C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:624
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4572

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
43KB

MD5
a88add842e0f2f4f642b32e97ed85c87

SHA1
7d1df872879fc1654399142bad5d3baa35f66d82

SHA256
9cf5b24e877b5e2cdc41de4dcf434ebf9be7a0ae945a2f2faf9d9685962894ad

SHA512
9394322b8ca46eb603470579b4d7336f4ebb831c929ddc62efd761f85f4efbf2c47803eb0dd7f4087bbf87f058cd66bcd1b20de6a966054ea7f0ef53b8be4c36

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

Filesize
48KB

MD5
deea013781b560c2ad84d3a0500e4aa5

SHA1
23bfc39d6863c3e421a8c8e1730d83b35d38ffc6

SHA256
0c653808f9f07295899f40b421e96403c2ee894864509a7e458d035b1799fe95

SHA512
c0d1625abab9a07094d9cda580424151091e5bf601c83cc33df845abc89b1bcf645daffa56aadee4d870cc1db8b505aed65c4bfdf7cc48eca4313a4bd7988a13

Download Submit
memory/624-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/624-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/624-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/624-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/624-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4572-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4572-25-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4572-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download