e5c35c9b35d5ab685164d4492f69f3b4e864a4f46e5b20155427168d9893a523

Analysis

max time kernel
137s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 10:58

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General

Target

2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe
Size

44KB
MD5

b1dda387c9031700d0d1eda547c15e01
SHA1

cd34fa818bcde2cf7b9a82df80e44104c206c5a0
SHA256

e5c35c9b35d5ab685164d4492f69f3b4e864a4f46e5b20155427168d9893a523
SHA512

50d783516c83634085512ae871726799e301214fb44485727dc33d1ef3c007335adb9d905ec8d95d5c7b9f599445ad4f00d29aa735272f394cfe81188b2ebd97
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqvdD:bxNrC7kYo1Fxf3s05rwxbFcdD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023313-12.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
4872	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 3020 wrote to memory of 4872	3020	2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe	95
PID 3020 wrote to memory of 4872	3020	2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe	95
PID 3020 wrote to memory of 4872	3020	2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_b1dda387c9031700d0d1eda547c15e01_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3020
- 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:4872

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=3952 --field-trial-handle=2264,i,7010714054498059916,1862725710331979271,262144 --variations-seed-version /prefetch:8
1⤵
PID:4408

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
44KB

MD5
a4ee914204468c3d1fc5aa4fdb6faa46

SHA1
183750af116debc739bd50ed9c69153cea6d78c2

SHA256
8b20b4b559ead787f7c1eaae39631bcea0d13ad177c6b371c7cfece09bceffef

SHA512
0388c53b25b33bc6c2ace9714759a7fb5488ebaf757d0c3ad81c695d2f3b82dd77b565f852f14637250d6595dc637bd49b67128c6a684c372cafdd08aaa99b4a

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3020-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3020-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3020-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4872-17-0x0000000002590000-0x0000000002596000-memory.dmp

Filesize
24KB

Download
memory/4872-23-0x0000000002560000-0x0000000002566000-memory.dmp

Filesize
24KB

Download