751fa061171278743d4a56410aae7ea3ccb6aaa8fd578f2786b7b44364e1fb5b

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 01:01

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General

Target
2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe
Size 33KB
Sample240525-bc7t1agh8v
SHA256 751fa061171278743d4a56410aae7ea3ccb6aaa8fd578f2786b7b44364e1fb5b
MD5 05d2f80fd4aa07643243d2ba7d27259c
SHA1 0329ac11e60b023103e9fd253bfb5deda8868edc
SHA512 9ddd2d341a4980f62d954940f76c6bcbdd43a050947f21f939b4635798c835b8ee73fe6f07b975791b02bc020875fd954ba345f979ee14d18d260a229e99410a
SSDEEP 768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jd+x:bxNrC7kYo1Fxf2rYPsx
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023232-12.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	2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4396	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 5076 wrote to memory of 4396	5076	2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe	90
PID 5076 wrote to memory of 4396	5076	2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe	90
PID 5076 wrote to memory of 4396	5076	2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_05d2f80fd4aa07643243d2ba7d27259c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5076
- 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:4396

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=3884 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:4532

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

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Downloads

pissa.exe

Path C:\Users\Admin\AppData\Local\Temp\pissa.exe
Size 33KB
SHA256 b8b7ed93673c67b021c57efc495c90f990d5671974069de15cb63b6e7aaf9b0b
MD5 799c4ae10787cd87873d92020e88fe64
SHA1 61e5fe58db261644f31d9725743f6a5bf163d0a3
SHA512 965507140647c2831729c0ea148f244a4f11761e252229ffc86aba2f5e807233d87e4ea617b17907c6a8d84a30f9e5a72b2517a4f4eadf59bdbdb3a1c4f3a697
SSDEEP 768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jd+q:bxNrC7kYo1Fxf2rYPsq
MD5 SHA1 SHA512 SSDEEP

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pissec.exe

Path C:\Users\Admin\AppData\Local\Temp\pissec.exe
Size 261B
SHA256 bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666
MD5 11bed1c06d8f4680de5154405be20365
SHA1 9c3095f1aa0b02924c23592d1e86673bb0081ca1
SHA512 050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8
MD5 SHA1 SHA512

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memory/4396-17-0x0000000002210000-0x0000000002216000-memory.dmp

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memory/4396-18-0x00000000023C0000-0x00000000023C6000-memory.dmp

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memory/5076-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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memory/5076-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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memory/5076-2-0x0000000003150000-0x0000000003156000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads