6b455ed7df74aee1433dd2715147754c02484e1f0778cec9f0a978a2858228e5

Analysis

max time kernel
146s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 21:28

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General

Target

2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe
Size

97KB
MD5

5032d592798192bdd073107f4ebb6af0
SHA1

2976a91c70b945ac08d08a4efe67e1362c3819d0
SHA256

6b455ed7df74aee1433dd2715147754c02484e1f0778cec9f0a978a2858228e5
SHA512

4da1a9e50d2ede6963eee216700261de9295c7209ecb752d423a98f6d784842cfe8ac9b2713af6ca98a8e180ebc12ce2815deb367be92de6c8cf4443e0aa6dc8
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01U:AnBdOOtEvwDpj6zy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4544-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326b-14.dat	CryptoLocker_rule2
behavioral2/memory/572-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4544-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002326b-14.dat	CryptoLocker_set1
behavioral2/memory/572-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4544-10-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000800000002326b-14.dat	UPX
behavioral2/memory/572-27-0x0000000000500000-0x000000000050F000-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	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
572	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4544-10-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002326b-14.dat	upx
behavioral2/memory/572-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 4544 wrote to memory of 572	4544	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	91
PID 4544 wrote to memory of 572	4544	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	91
PID 4544 wrote to memory of 572	4544	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:572

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=4440 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:2668

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
97KB

MD5
8c1f3587f9ad570ea78e17e97a9b9bd7

SHA1
bd722c4d8b973049430819d09e60b0611a0aeee2

SHA256
f24e546482120d1c544a01c8c0ff0204e2cc2c0be84e15b5f8a529abb4bf4f68

SHA512
a095fa9b17e1f3e2b198c689a7b708907b4352fbc2d64131caeff34e04e3bf07cbe4182543f46f05183ac5cdd06a775f5776ddfe8d502adbeed0becbac58d7cb

Download Submit
memory/572-25-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/572-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/572-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4544-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4544-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4544-3-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4544-10-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download