8d6898522fa05a865116d3ffed74f519a62572461f561ce7db2cf4d3bddffd33

Analysis

max time kernel
146s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 23:26

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General

Target

2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe
Size

95KB
MD5

fe332d3a13b6f6d13484a079dbc928f2
SHA1

3b41888312ab6b1218489478666834403534b845
SHA256

8d6898522fa05a865116d3ffed74f519a62572461f561ce7db2cf4d3bddffd33
SHA512

b666f4c1e120e4be1c12dcdf9491dd59b13d1d06f155481574a2222c984ef65cd8862f672e157a1de67e0aaf062b18f3beda5366a3345addaf9b2c66e5409b2c
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+j:AnBdOOtEvwDpj6zY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/372-11-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326a-14.dat	CryptoLocker_rule2
behavioral2/memory/1572-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/372-11-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002326a-14.dat	CryptoLocker_set1
behavioral2/memory/1572-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/372-11-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000800000002326a-14.dat	UPX
behavioral2/memory/1572-27-0x0000000000500000-0x000000000050F000-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	2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1572	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/372-11-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002326a-14.dat	upx
behavioral2/memory/1572-27-0x0000000000500000-0x000000000050F000-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 372 wrote to memory of 1572	372	2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe	91
PID 372 wrote to memory of 1572	372	2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe	91
PID 372 wrote to memory of 1572	372	2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_fe332d3a13b6f6d13484a079dbc928f2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1572

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=3688 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:3032

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
95KB

MD5
0d8f10c6488e711bf2192bde6b45ed2f

SHA1
14e37d33005860d4a986fbe23209bf3edd694607

SHA256
d7b60888461eece85ef02f84ee19b56ef699fc87f34826964a89ba9e63ef868c

SHA512
578454d16074a08b61739bf6e6aa84c72baddbe0f6f1b9f03a81863b352e04964c074ad992d6312953b9ac55b377acecd9839cb912bc296759935cbac2055317

Download Submit
memory/372-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/372-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/372-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/372-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/372-11-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1572-23-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1572-19-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/1572-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download