2c773300fccbc48776d383980693348e04fe8383f271495eed2e5bcb7b4c3da4

Analysis

max time kernel
143s
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
15/04/2024, 06:05

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General

Target

2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe
Size

129KB
MD5

7fe93e6e3d21cacd23dc5c25b7ce6e74
SHA1

0fc523343b63164acd75f740ae5a04f6193534c7
SHA256

2c773300fccbc48776d383980693348e04fe8383f271495eed2e5bcb7b4c3da4
SHA512

d8dab8ab14eaacdd0d69443779996dd7f2d63df1fbe6a2294569def405eef370acf8374dfe9992d3d90b875186c055051a0dc66adc8c5aaf6d37a890ab0c4338
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwb2Co:u6a++OtEvwDpj6zs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023258-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023258-12.dat	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1820	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 3540 wrote to memory of 1820	3540	2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe	91
PID 3540 wrote to memory of 1820	3540	2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe	91
PID 3540 wrote to memory of 1820	3540	2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_7fe93e6e3d21cacd23dc5c25b7ce6e74_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1820

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=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:400

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
130KB

MD5
3ff5e7bdcb99943325fc074f32ff5e83

SHA1
7f88b3c4dc1318ec88be49ab6d0d50be648bfb75

SHA256
065547bad414e98fbe56fb12d24766c48857a3ba79827b98e8adacafd9809a72

SHA512
3416a33642220e54657924e2bfa011168e44a41100c5f2c080a8d7bb7a7bd6445a2e83d2e3892dbb00df7498de3e8cb8f748cc8cde1dfa62ec6440d7ff31e88e

Download Submit
memory/1820-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1820-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3540-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3540-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3540-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download