b3a8831825850c96296b5ef2e15610fb4475b51c95507bed31a294722f157b94

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 18:28

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General

Target

2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe
Size

35KB
MD5

2bb52d3ae931601bc2a8be3b4ded38e8
SHA1

dd26e27d3380d5124cc8455af7f8a7ad0b5207c9
SHA256

b3a8831825850c96296b5ef2e15610fb4475b51c95507bed31a294722f157b94
SHA512

0775e1c7b62d2384a9d6abccaa3290982e524f97c064550d71d3db03f78c6fb95de14460242eec4b5287636119dc178d84ece488f9619b7b57b34cd4656160c5
SSDEEP

768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4r:fT+hsMQMOtEvwDpjoIHr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.dat	CryptoLocker_set1

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2104	misid.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 3020 wrote to memory of 2104	3020	2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe	88
PID 3020 wrote to memory of 2104	3020	2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe	88
PID 3020 wrote to memory of 2104	3020	2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_2bb52d3ae931601bc2a8be3b4ded38e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2104

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\misid.exe

Filesize
35KB

MD5
21f2b1743b2e9f692f393b631009f001

SHA1
88c0fa50544027d4cf941f72339fed6440f935d8

SHA256
394b9eb78cdaa123231e4d8c27c6869d1591dd68a4c6307e16264cc22f09b5a1

SHA512
3f4e1ef95a9904e6b35fdd9e61e5335da95f0d0f947c996d5ca422b6473c90f07afaca7d42c211a350110d3ce21b90dbf83463f9a7331d1017601e82173d51ca

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

Filesize
315B

MD5
a34ac19f4afae63adc5d2f7bc970c07f

SHA1
a82190fc530c265aa40a045c21770d967f4767b8

SHA256
d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

SHA512
42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

Download Submit
memory/2104-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2104-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3020-0-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3020-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3020-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download