2a4f4f465a13df0aead42584a91f8a2fcc01fa17733a524284690d886748eaac

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
10-04-2024 02:55

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General

Target

2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe
Size

44KB
MD5

ba2d20ea0f1aaec9f28181f21de286d5
SHA1

91f487b4fe11e053493343408eaa8146c916092a
SHA256

2a4f4f465a13df0aead42584a91f8a2fcc01fa17733a524284690d886748eaac
SHA512

3b6b23665a74c86f63c433016e7494c8c343f96efdf9f6b1ee2343a5a22a3fa9f4a6dccab58bc1d8bc49c3a39f890be49ef641343f57eec2dc2ae6b7999e8b08
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1Yvb9wAs:bxNrC7kYo1Fxf3s05rwxbF7YvbS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00020000000227ea-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	2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_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
1680	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 3272 wrote to memory of 1680	3272	2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe	95
PID 3272 wrote to memory of 1680	3272	2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe	95
PID 3272 wrote to memory of 1680	3272	2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_ba2d20ea0f1aaec9f28181f21de286d5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3272
- 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:1680

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=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:3260

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
eef2e4f454e4c843cd73fe0b19fb7639

SHA1
e7bc3b5f84967b114faaa9216e947bd1647892c9

SHA256
f240564a4c4540c798d1bfe9504330655e90c79d43d0b54057feb99ae61b8a10

SHA512
3ae6d724744c52e6c9990209c552b74c600dd51a79fcbf2bd2af6e91e157c140a0ec6360b9836003f6096f7db8841cb228705be636c806e0c3f4618662bf0782

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3272-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3272-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3272-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download