906e779c9bb34f2ef724aa8769a64f3fb4d8eaa6b0f56abb5f5022e249b4a277

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 02:33

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General

Target

2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe
Size

62KB
MD5

6e5c0b753328783d84c0dae84a6073cd
SHA1

887d5df5797d869dfb7fed48a37b3896346dc11a
SHA256

906e779c9bb34f2ef724aa8769a64f3fb4d8eaa6b0f56abb5f5022e249b4a277
SHA512

f1982e6da28659bc293e68546239013839d74b3389a6d7355010c1f8fbfea48288d2dd2c01fa89b2e21f64e1e361b05d9dc992c753c93e926cef5ab72a666297
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtss:BbdDmjr+OtEvwDpjM8E

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/1204-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4636-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1204-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4636-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000001ebc7-13.dat	UPX
behavioral2/memory/1204-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4636-26-0x0000000000500000-0x0000000000510000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4636	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 1204 wrote to memory of 4636	1204	2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe	89
PID 1204 wrote to memory of 4636	1204	2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe	89
PID 1204 wrote to memory of 4636	1204	2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_6e5c0b753328783d84c0dae84a6073cd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4636

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
62KB

MD5
de99f8bfe7a5c43d4837d3aa0192a7d0

SHA1
5b800ab8b289e13a2789c96786f63ee902fdce21

SHA256
445d16975f3acf02324b2c4b8b57c5f832fa3195970bcf445b3cbcabcd150b9f

SHA512
58c9e09f82630c0dd608528057b7427d19f88213352f4bc944e93fadb016df1f054b2ca4c64c4c1d6c3302076313393d6223652f55f7f288febe5f1b4956f984

Download Submit
memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1204-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1204-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1204-3-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/1204-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4636-21-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4636-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4636-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download