49ffcb061b3e463e11581696a81caa192263827598373ae51dbdf82e2a060900

Analysis

max time kernel
148s
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
12-03-2024 07:28

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General

Target

2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe
Size

49KB
MD5

8d4267a88372ef033225b2d63d6e7def
SHA1

96a0a26a784c3b45710cc1e10b4249dcd72bfbda
SHA256

49ffcb061b3e463e11581696a81caa192263827598373ae51dbdf82e2a060900
SHA512

590a21930b984cbeb5798462a6c41e971fcd7b2920dbb3cdcedd7d0f0f15018d84ba18bdc986c276fbfc4a4970434ec40c88ebff727bd17b105f82a3affaaac6
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZd:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023275-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023275-12.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	2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2092	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 4924 wrote to memory of 2092	4924	2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe	99
PID 4924 wrote to memory of 2092	4924	2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe	99
PID 4924 wrote to memory of 2092	4924	2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_8d4267a88372ef033225b2d63d6e7def_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2092

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=3980 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:2596

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
49KB

MD5
ad12774014e0f23c8731ea7114f3439c

SHA1
cbb3012942fbc878a538f32a28bcedf578a1051a

SHA256
c8ac3cc698b546982325f78d99bc40202c3f83628bbf764b45eeb0b432088d58

SHA512
3a9e4e9bf6c0b6f6ac836e6657c88f66a64203c16aff1c009ff99e5e3568dc9daef45e0fa439dbcb1fc04246d0986601e0331720e90a512146f11614d8450afe

Download Submit
memory/2092-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2092-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4924-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4924-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4924-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download