04ffb3aa8836eb0034544242558ba6d76659e5254d30a67ca5586f6f4e87128b

Analysis

max time kernel
146s
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
24/04/2024, 19:51

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General

Target

2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe
Size

33KB
MD5

c8567fa47abdca408770ac489ed72435
SHA1

5bd4f978acf20383072f764187e62555da56c045
SHA256

04ffb3aa8836eb0034544242558ba6d76659e5254d30a67ca5586f6f4e87128b
SHA512

d80d072b024f94f3a40f229c087984d7f254ce9ba176e5b323d8f16f5bf3542c5be24e6847eff481272d165ded01f8a8b6dddf17ed451f76e4ab6435bc9196da
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5PpKp:bxNrC7kYo1Fxf2rY1C

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001ea83-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	pissa.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	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 2116 wrote to memory of 3608	2116	2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe	91
PID 2116 wrote to memory of 3608	2116	2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe	91
PID 2116 wrote to memory of 3608	2116	2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_c8567fa47abdca408770ac489ed72435_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2116
- 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:3608

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=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:2232

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
33KB

MD5
4a0ba75c403939c1c8c8cd22305b63de

SHA1
d2ca4e35f9380ccf04cd9df94c645b7fef5bc567

SHA256
0c5d3dd487717abb284b6edcfdd5b3dc395e606f82f9bdaed811097180a72956

SHA512
8765a7325f7f2ee9f38e1b67501a6d90389067ab1d794eea523e4f1dfa810131bce6500213a7c6072ac1791fe2f29426372801d24dac6cf50b168c9fa72c41d1

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2116-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2116-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2116-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3608-18-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3608-17-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download