5c3ee05eb82616006432352489d9afff766b4bafa6d87a3160e0164b13c30fd9

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 19:28

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General

Target

2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe
Size

58KB
MD5

751a22a46b646c7c06b6dfd17ea7d5f2
SHA1

098180ab0cc048828b1d9b7b3a853c09f247bdf7
SHA256

5c3ee05eb82616006432352489d9afff766b4bafa6d87a3160e0164b13c30fd9
SHA512

4cd306584e1721142ba75cf09a02ff9703363a954abfd0e5cbd70d1c4dc627dd27194310a3f9872e35fc0dc72b1268743752ef7a131df1fd7a63a27111441ce6
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj2:H6QFElP6n+gou9cvMOtEvwDpjCpVX/

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001450b-11.dat	CryptoLocker_rule2
behavioral1/memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2440-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001450b-11.dat	CryptoLocker_set1
behavioral1/memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2440-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001450b-11.dat	UPX
behavioral1/memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2440-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2504	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2440	2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001450b-11.dat	upx
behavioral1/memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2440-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-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 2440 wrote to memory of 2504	2440	2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe	28
PID 2440 wrote to memory of 2504	2440	2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe	28
PID 2440 wrote to memory of 2504	2440	2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe	28
PID 2440 wrote to memory of 2504	2440	2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_751a22a46b646c7c06b6dfd17ea7d5f2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2504

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
58KB

MD5
21579bc4106600533b0d7613ba093dc2

SHA1
634ddffda8f31a88aca2fc64fd9d19b1e8905b05

SHA256
2b5e0f6600ea53f1b9c6271bdc4791f7f2021c3c1744b898a5778b2c859478fc

SHA512
5639bc032e59969b87c6be83b2ac458e1257390c5c9a2e12e475c5db9b18b95eedb7f2ad4452f85b700ee82853479e8f95fc66597243a868d4e49644ef8890e7

Download Submit
memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2440-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2440-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2440-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2440-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2504-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download