966eaa0ec90a757297f213faf4403db6f50e3a3fd26face1899a08370b0103e3

Analysis

max time kernel
153s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 06:14

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General

Target

2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe
Size

126KB
MD5

a17adb185115eabf5cecad040dcbae91
SHA1

bf3324fb3eecdb7528ef5ace5399bf49bb99a078
SHA256

966eaa0ec90a757297f213faf4403db6f50e3a3fd26face1899a08370b0103e3
SHA512

12a9ed82b63f6078a6c6f5c59655cf6a4c36e031ae09603ffdf8e9c48853df6a5ed5b7e23a39800704a415dc7b201a4d04b080a2b693136f76828a4bcd9c6e74
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpVY:vCA9OtEvwDpjq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023247-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023247-12.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	2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3220	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 3856 wrote to memory of 3220	3856	2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe	96
PID 3856 wrote to memory of 3220	3856	2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe	96
PID 3856 wrote to memory of 3220	3856	2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_a17adb185115eabf5cecad040dcbae91_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3220

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=3932 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:2296

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
126KB

MD5
d8a65dd8606528811b9dfdc687c8ab63

SHA1
71961f2be5d93857d2627ce30542d7b5abcd79ec

SHA256
5808e1982f3e651a837c9538d071cb1e5de3e82cf36ac5425ecfb55513f1b8cd

SHA512
2ee64d8965f70e36d247189786bb1452266d2ec025856d0103d408cbe02c1b649417dbd96c41b0261f739e1f550d3c5ba47707899545539c760af6c82568f39f

Download Submit
memory/3220-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3220-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3856-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3856-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3856-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download