daa2cbc53665ce13ca31ec5c0d08e5f4faa07250eec519004ea4b7f7a2de4970

Analysis

max time kernel
162s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
10-04-2024 07:44

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General

Target

2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe
Size

32KB
MD5

f9a97ac140e6dd83de5c31cf7af546cd
SHA1

270c385d645575fd39a06528dc85cfbc0228b766
SHA256

daa2cbc53665ce13ca31ec5c0d08e5f4faa07250eec519004ea4b7f7a2de4970
SHA512

1d96d396a31f8f98b36e3e26721235afd841760034b3ae76cdb7da5823a093257c20b3471022b153b59e2dba2b9a6ae719ed46c6cba2985b8078058e8a2c5d97
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5T:bxNrC7kYo1Fxf2rY/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023337-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
4860	pissa.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 4844 wrote to memory of 4860	4844	2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe	96
PID 4844 wrote to memory of 4860	4844	2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe	96
PID 4844 wrote to memory of 4860	4844	2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_f9a97ac140e6dd83de5c31cf7af546cd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4860

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=4088 --field-trial-handle=2256,i,5035714022000286426,16259316383734940314,262144 --variations-seed-version /prefetch:8
1⤵
PID:804

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\pissa.exe

Filesize
32KB

MD5
99badbf27fe5c49012a79ad78e7c38e9

SHA1
b8965710a1f2aaf6815ab126478c6e1ccc6eb1bc

SHA256
2cb4a2d54cdc097efce3aa106750215be0317551bab293dca4edcb65223b20d9

SHA512
64deefbd492680fc7ca1cb3418498192b2b9955f1de4d00cd35ea7eb42323fd9a6eff824896bea1fb6cc059c56d78be3d05bddcb64e803e3a266a6456d40b27f

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/4844-0-0x0000000000780000-0x0000000000786000-memory.dmp

Filesize
24KB

Download
memory/4844-1-0x0000000000780000-0x0000000000786000-memory.dmp

Filesize
24KB

Download
memory/4844-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4860-18-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download
memory/4860-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download