0af5ea2a868125ec31e6c03d274619c3692ba681283cd16f213bc90bb5ea0ebc

Analysis

max time kernel
144s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 03:39

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General

Target

2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe
Size

37KB
MD5

f3ec873e146367bab5c7e12db3d79568
SHA1

8f64c0ff55869cf9b611fb2ac1b675a2986c743d
SHA256

0af5ea2a868125ec31e6c03d274619c3692ba681283cd16f213bc90bb5ea0ebc
SHA512

2b14c13344dd49d962f88a9593648123b82605fc54c32288e0ec4e0758d1d073ac8741dd4e7d341c7f2f0d0ebff1cff826043450e627ec19b98e027ecc8342b2
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axjk:V6QFElP6n+gMQMOtEvwDpjyaYaa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002327a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002327a-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	2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1060	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 3868 wrote to memory of 1060	3868	2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe	100
PID 3868 wrote to memory of 1060	3868	2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe	100
PID 3868 wrote to memory of 1060	3868	2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_f3ec873e146367bab5c7e12db3d79568_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3868
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1060

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:3348

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
37KB

MD5
e217f178f992099079fbdd3cb8c487ae

SHA1
2f99e91f54fbf33eea4914b175724faa33ff533a

SHA256
5aca05a586786c185003d8eac3a42096a5530890df6a14e9d495741f9ca36d5c

SHA512
dbd7b709f50c28b86f99d20285ba9f2ad785e3d17ce61813e04b354a2a037ecb6941c1b9c8a6a9e0da3728ac0e648b58fc274097dfb8034324203a03c7fdfb0c

Download Submit
memory/1060-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1060-19-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3868-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3868-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3868-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download