e8584949d86e2af48649f99194f5ce74d18033bc01913ee56ab83ddfee4e5294

Analysis

max time kernel
145s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 00:30

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General

Target

2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe
Size

36KB
MD5

49f72e1cbbc6c4150360c9dab7c99895
SHA1

b17753ce42167ca2a5567cf2e1b87797d860fb86
SHA256

e8584949d86e2af48649f99194f5ce74d18033bc01913ee56ab83ddfee4e5294
SHA512

4194e165d8812fbf0c6ca8d7f2fbe72578cd24153df8608d489782464aa5e86d2edf2a8e3624c3c01a4480eca82f6a3136b058255dfc0d4ebe45d87a0ce07481
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLQ:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2448-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000022480-13.dat	CryptoLocker_rule2
behavioral2/memory/2448-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2448-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000022480-13.dat	CryptoLocker_set1
behavioral2/memory/2448-25-0x0000000000500000-0x000000000050B000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1964	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 2448 wrote to memory of 1964	2448	2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe	88
PID 2448 wrote to memory of 1964	2448	2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe	88
PID 2448 wrote to memory of 1964	2448	2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_49f72e1cbbc6c4150360c9dab7c99895_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1964

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
37KB

MD5
002ae6c8e72a22af4e58f420c425ee2b

SHA1
05312ee88465f8a864177642e1cb9f62564448de

SHA256
5a4efe43a7daf426274370e55d89d646362985eea6b5ddf10c20d5ce809bff04

SHA512
90d6e54f8a5cdcef898183457a5266e498d64c6ac2f57e5a99f8c820f200c5039e6d06fa6c25106572c0fec7d0aaf4c3efc1a36b15b0384633bf986310554bf0

Download Submit
memory/1964-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1964-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2448-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2448-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2448-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2448-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2448-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download