ea9d8b1a7763488875df5d26d4b6938d152d1b87ccf52bfe046e27b389d3025d

Analysis

max time kernel
125s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 04:48

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General

Target

2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe
Size

43KB
MD5

4e46b626464f0551c2b4bad3a25b2e8f
SHA1

65b7c7cefb022cefb281fed987da3adf3aa659ce
SHA256

ea9d8b1a7763488875df5d26d4b6938d152d1b87ccf52bfe046e27b389d3025d
SHA512

6909841fb8bd5bb1ca552663e5d39af7c0d0f30290005a90ddb5fbe25bd2449d4fd0fc02f2c1fe6f32973580d6d5159e39bdd53abd1481d2467e011720f865ee
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1REK:bxNrC7kYo1Fxf3s05rwxbF75

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000234f5-12.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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
3284	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 1720 wrote to memory of 3284	1720	2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe	92
PID 1720 wrote to memory of 3284	1720	2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe	92
PID 1720 wrote to memory of 3284	1720	2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_4e46b626464f0551c2b4bad3a25b2e8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1720
- 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:3284

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 --field-trial-handle=4292,i,17229298512878960157,13441031190071685883,262144 --variations-seed-version --mojo-platform-channel-handle=4164 /prefetch:8
1⤵
PID:4868

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
e31a6853bfbc334e5e2e6f9cc22f6b84

SHA1
8ae2722731809ed706131e27fde680f70fec86c6

SHA256
78a0b7ae5ba3b895f462ad04e9843d08a474dd8a57d774a971d747e0345b3a54

SHA512
c9aad0a6fc237562187cc60ffd6e0e405620bd78faeef079f023524cf287ccda8ed5c41d6418f229f3db49ca007ad538396a932b4c7895a6ebd1712399b9ff55

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1720-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1720-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1720-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3284-17-0x0000000002590000-0x0000000002596000-memory.dmp

Filesize
24KB

Download
memory/3284-19-0x0000000002560000-0x0000000002566000-memory.dmp

Filesize
24KB

Download