85e1faa1d8dd2ab9f474eb70d52e8250b10a88411c7ad248723b0373bec07267

Analysis

max time kernel
142s
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
17/04/2024, 19:54

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General

Target

2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe
Size

80KB
MD5

ca4e2eb1d7c206fb0ce025fa5ec7638c
SHA1

e9e9f71c907559f4a04b59603823ec293d7a035c
SHA256

85e1faa1d8dd2ab9f474eb70d52e8250b10a88411c7ad248723b0373bec07267
SHA512

7149af60ee28f3a262a88a01afa44f3c339dd5a0bc227c7c989397a1746ef1d850064565d01679b3e783326ead2a9c9304038980a35f2a9c5c3018a1d564d0cf
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNqk:vCjsIOtEvwDpj5H9YvQd21

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-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	2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4004	misid.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 2252 wrote to memory of 4004	2252	2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe	91
PID 2252 wrote to memory of 4004	2252	2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe	91
PID 2252 wrote to memory of 4004	2252	2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_ca4e2eb1d7c206fb0ce025fa5ec7638c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4004

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=1268 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2888

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\misid.exe

Filesize
81KB

MD5
a2d2e2270efd2690cc7d157700c07c9d

SHA1
c9320c1d45c24cb0553e6d700d294ad7b54981e2

SHA256
7a615c5b85a1e6f488782832bc5a7453254bb5c4e9c3b46a11b44f7668a2fd38

SHA512
1c5185d6e5bf446de40100f40aee81300ed7a18850a9adfeb683a4a9021948f95b9af3fb70456638dc6de4ea0532f5401ba2f3cf2828ae1149ac6cccd96a9eb0

Download Submit
memory/2252-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2252-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2252-2-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4004-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download