48a63229cb8fc011d664e7e19dbf66bdecff5c3cc030adc644a56ee0a16e0687

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 05:23

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General

Target

2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe
Size

44KB
MD5

cb367e4008a624c53e85f3873a6f6bfc
SHA1

085638b906f73a6fff345a1a4cd9e96d0d4dc5ec
SHA256

48a63229cb8fc011d664e7e19dbf66bdecff5c3cc030adc644a56ee0a16e0687
SHA512

4735f18408fba8939d3d5ae2c9007299ce723667f2da8303bedba1d7b680fee866e41ad0dbc0a0a20ab7486193c8ed49646776f6095cb44cd20dcea10562a6a1
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDw:bm74zYcgT/Ekn0ryfjvw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3660-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023261-13.dat	CryptoLocker_rule2
behavioral2/memory/2372-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3660-19-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2372-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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	2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2372	hasfj.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 3660 wrote to memory of 2372	3660	2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe	91
PID 3660 wrote to memory of 2372	3660	2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe	91
PID 3660 wrote to memory of 2372	3660	2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_cb367e4008a624c53e85f3873a6f6bfc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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=4036 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:2240

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\hasfj.exe

Filesize
44KB

MD5
36ce88b272590a42b8abb158cf3a4d16

SHA1
f5c5ccb356341334e5848af77ffab1969d3d54f1

SHA256
5e2c8980859bda762de05bfafb2bd4803bf2f93e434144f1690ceea6f7c451cb

SHA512
b4871bad56b36aa75997efdc502ef243295f65b028c385ab1a668ec028237560b71a62557ea25fe56f1fab1563050a6699fe0effe9260a11a33e6ce4120b9f5b

Download Submit
memory/2372-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2372-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2372-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3660-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3660-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3660-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3660-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3660-19-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download