037c931944896acda035e2392520d58f029c467747bb8ee3b3c2f4bc40707f25

Analysis

max time kernel
144s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 06:53

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General

Target

2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe
Size

47KB
MD5

ffffef086ca3963100c82add4a0d1f65
SHA1

041be8e3f3962fa1c9f0907fa4b5729d7365dbca
SHA256

037c931944896acda035e2392520d58f029c467747bb8ee3b3c2f4bc40707f25
SHA512

7781b296847c348290e6109891e9438974e3f5974df45584df96f86d720a7ee3843766febfb4931dcb1cd4205310504c23d2b1e757a49a61854a98963151cbfb
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556BlH:X6QFElP6n+gJQMOtEvwDpjB0GIWSlH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324a-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	2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1256	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 416 wrote to memory of 1256	416	2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe	100
PID 416 wrote to memory of 1256	416	2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe	100
PID 416 wrote to memory of 1256	416	2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_ffffef086ca3963100c82add4a0d1f65_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1256

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=3916 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:1896

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
47KB

MD5
b16b0f850a25319bb572746971b295e8

SHA1
286fa7beebaccb88781abc68a50c4077dae3c343

SHA256
08e38955e52d2f9e64052b7a9f20659b4631e932e70af1629eba3fb5c1fc4ac6

SHA512
29de74287e93dc91ff747c77900d4a20b675636752f928ec982fca88c46157a4b80bbc2845f6a6dbf2d197028c03d0fe9d5024de5ebc8b73ac5dcd2a0d2c454a

Download Submit
memory/416-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/416-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/416-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1256-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1256-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download