99e747ee87b19ecb782304e5161b8a01b360cde7bd388f14e9b194a9516a504b

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 15:24

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General

Target

2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe
Size

34KB
MD5

348fc3862ffb9be3dbe16a2dd04fa9df
SHA1

054ca358450342a83f23d4202697f4493aee687d
SHA256

99e747ee87b19ecb782304e5161b8a01b360cde7bd388f14e9b194a9516a504b
SHA512

90f4634cfda88a0e4ec3e05c93cbaea2ecf4dd14e8a01ded969550df5d223f9423117270ccc9d0afe64e1aeb870a2e80dcecace044ff935c3d1935c8ad26cc4e
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7Z:bxNrC7kYo1Fxf2rY1d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
220	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 2756 wrote to memory of 220	2756	2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe	81
PID 2756 wrote to memory of 220	2756	2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe	81
PID 2756 wrote to memory of 220	2756	2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_348fc3862ffb9be3dbe16a2dd04fa9df_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2756
- 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:220

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
34KB

MD5
fcd2e4101e92ed41b54dff5f6986a645

SHA1
a784c89e5339c57de65e68558b7d894ded492ff9

SHA256
3c4246472c490d5478afd4a040408b9d471d3001975b56115345c4381965f6b6

SHA512
f341b977628133ef1280b82078acccc67339239e5eea05e66c1def772526b58f193a8906e840682b997d1b7b4f48ae777459987f44202c83a3691adda3d8ced3

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/220-23-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2756-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2756-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2756-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download