1dd2843918e076a90bf52dd0b5a84dbc3618d085fbc9d2de419523d75449056f

Analysis

max time kernel
143s
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
21/04/2024, 05:58

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General

Target

2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe
Size

33KB
MD5

c33905c490a258a351e134e879a51952
SHA1

95c02f5f048e219d5a4fc0bfdc271dd07b3df107
SHA256

1dd2843918e076a90bf52dd0b5a84dbc3618d085fbc9d2de419523d75449056f
SHA512

f4216cc49ef487d559a6abaa76ac947e8525c0dbdac557750fb642d164ef73ce9e7f703856b1a8d0a0a9d198f02b2098cdc5719027ec41e6d21774d3c080e213
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5m:bxNrC7kYo1Fxf2rYy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023265-12.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	2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
4772	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 4064 wrote to memory of 4772	4064	2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe	89
PID 4064 wrote to memory of 4772	4064	2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe	89
PID 4064 wrote to memory of 4772	4064	2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_c33905c490a258a351e134e879a51952_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4064
- 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:4772

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=3808 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:4980

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
ffe42c30decfd9e539ca98e36cae8ab1

SHA1
483947f1134461cb80681420f63849e3b0825205

SHA256
30421da077ac96230e7a22cd860aebf0c823062e02cf08481d9a0b2d27e9668f

SHA512
1fa666ec3e42f9fa642589b21ca88d8f16ffdae1eb99ec06efe5c61747ffd4bc251b71bd14014e78f26fe69514798c2b315d04eb3d20d82149f86f97ea0a6847

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/4064-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4064-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4064-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/4772-17-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4772-18-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download