7ebdafa676ee8ce095efc18318e906dbe3d5969192987c76133ad27081ccb9e6

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 22:44

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General

Target

2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe
Size

52KB
MD5

5569e7a13c0d2131ee85c27d86441f5e
SHA1

c72645a063c92d089a2f5321239b19de91368ee8
SHA256

7ebdafa676ee8ce095efc18318e906dbe3d5969192987c76133ad27081ccb9e6
SHA512

785692bbf7002e9f2aad8d277786f790e961b6ab9d9e35b2c32ec00be2d9c16111253ed8c54418c256dc6e0410b7cbb5fb53e4feb51172f1376c01f3467fbf61
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impyq:BbdDmjr+OtEvwDpjM1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002324f-14.dat	CryptoLocker_rule2
behavioral2/memory/3672-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3672-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3672-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3672-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002324f-14.dat	UPX
behavioral2/memory/3672-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3672-28-0x0000000000500000-0x0000000000510000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3672	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 3552 wrote to memory of 3672	3552	2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe	99
PID 3552 wrote to memory of 3672	3552	2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe	99
PID 3552 wrote to memory of 3672	3552	2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_5569e7a13c0d2131ee85c27d86441f5e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3672

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4000 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:3460

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
52KB

MD5
7e9408db63f48a3e4e1478d33fc52b62

SHA1
a2cd5f651a4ff0376b8692f8a3e22d0e39d06b73

SHA256
dc2da0653707aaad5b2c9da8623f1ceadb4c33545e28a6dc74e60d86080546a6

SHA512
c4fdd5c4488a0b8d962182063e17d4aed57878615077b4397d5de2b27e2d7203acb320770f10c3672a96621073f2ec13cf449f04f3ec5e2967fc0eb85c8adfa7

Download Submit
memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3552-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3552-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3552-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3672-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3672-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3672-21-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3672-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download