d0fe111e7d6ba2449bf5d2d750cc8c878f772b7883dd8727820e19ac720a7a9f

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 15:48

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General

Target

2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe
Size

39KB
MD5

e85b102f2eecfb37ae20e323da590f21
SHA1

a3e088f4c49b288bd68967b2d1c0a255a08bb6bc
SHA256

d0fe111e7d6ba2449bf5d2d750cc8c878f772b7883dd8727820e19ac720a7a9f
SHA512

89d22fc14afc68d2a6df3e190ee3a755cc210b02005b9066afe507d6b3ac10772012f3eb6df28a3513c537a707e1af3c0c0a508cfcedd95ba072a1d6ef12168b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaIzlH:qDdFJy3QMOtEvwDpjjWMl7TdEH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012674-16.dat	CryptoLocker_rule2
behavioral1/memory/1048-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012674-16.dat	CryptoLocker_set1
behavioral1/memory/1048-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012674-16.dat	UPX
behavioral1/memory/1048-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2612	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1048	2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012674-16.dat	upx
behavioral1/memory/1048-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-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 1048 wrote to memory of 2612	1048	2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe	28
PID 1048 wrote to memory of 2612	1048	2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe	28
PID 1048 wrote to memory of 2612	1048	2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe	28
PID 1048 wrote to memory of 2612	1048	2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_e85b102f2eecfb37ae20e323da590f21_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2612

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

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

Filesize
39KB

MD5
cab9901a89bba01cfd294db4759f9e6c

SHA1
6a91feab897e8d08608126a47f5ad25b80ff6528

SHA256
90fc6a138951c7f0d29dfdb941928252ce967f117d7c1af11518843b00ec1758

SHA512
d427ab84b5f7d87e5103afb0946a906deaa8dafae17f86851fc3f76073f5ae3ccab110fc39685e83fe8dc13def19d164b7cfa5cdabae9f4b27c849d44a7262fb

Download Submit
memory/1048-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1048-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1048-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1048-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1048-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download