4105ca482dae3c6fba5eb44df4aec3795de037b52ba80f0973dd01c85b3cb88f

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/04/2024, 01:36

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General

Target

2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe
Size

38KB
MD5

edd9166edbf6fbc22b15afc7f9b8bf90
SHA1

e36cb39d54bb3b6cd83351c4affba09fd2210ee5
SHA256

4105ca482dae3c6fba5eb44df4aec3795de037b52ba80f0973dd01c85b3cb88f
SHA512

5943cd0696b6027166daabdd4f4743405f5863fc2d4e7b9a145aec54e9d1b9cba25152a07e72532361f46d56f58441c2fcc5a6014bad7cc3a39e16a9c3dea31d
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYR:qDdFJy3QMOtEvwDpjjWMl7T0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00080000000122cd-11.dat	CryptoLocker_rule2
behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00080000000122cd-11.dat	CryptoLocker_set1
behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00080000000122cd-11.dat	UPX
behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2444	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2780	2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000122cd-11.dat	upx
behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2444	2780	2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe	28
PID 2780 wrote to memory of 2444	2780	2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe	28
PID 2780 wrote to memory of 2444	2780	2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe	28
PID 2780 wrote to memory of 2444	2780	2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
7cde37603622f392ac205c004cae4f0c

SHA1
7f3d3dbf4e6a44e969db39a2d086e7d2eb6fdd52

SHA256
b3e323839fe7e640be1720479e5da387be8fe029de198ca64d53a8aef7e4a60d

SHA512
8d868828618087a2c3cb212c7f6e02d8f66c20a6acc8208d05ac4deff028cd283bf0e8410995d48fc0d95d36cb22ba0d3b5027972e0037870bcf6f734de18077

Download Submit
memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2444-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2444-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2780-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2780-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2780-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download