0846ac6e9c16a5df38c09488a82818f876f8a2d6fcbc7dce5edf5f63b30cfd5c

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 13:47

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General

Target

2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe
Size

62KB
MD5

d21dfacc316e6e3296bee128f7e5a75d
SHA1

a507bcd93cec2464dcfa9b6078bab785202cadb1
SHA256

0846ac6e9c16a5df38c09488a82818f876f8a2d6fcbc7dce5edf5f63b30cfd5c
SHA512

9f4f3231bd9fa6810eaadb53f219d601d868cee67be7a8132ee59f2d334e99ad8c175243d1098a55571839b10c17de73d387ee225306d48cb839d377f6610f35
SSDEEP

768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLamkc8J5S9UEY:T6QFElP6n+gxmddpMOtEvwDpjwa38G

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012248-11.dat	CryptoLocker_rule2
behavioral1/memory/1312-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012248-11.dat	CryptoLocker_set1
behavioral1/memory/1312-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012248-11.dat	UPX
behavioral1/memory/1312-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2540	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1312	2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012248-11.dat	upx
behavioral1/memory/1312-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-26-0x0000000000500000-0x0000000000510000-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 1312 wrote to memory of 2540	1312	2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_d21dfacc316e6e3296bee128f7e5a75d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

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
62KB

MD5
6cd57bb424de4e44cad15800a44ee02f

SHA1
161e6253238128f5b2a32b2073caac896cbcca6b

SHA256
b1d0de0b42f7f983fa07e75c87bf7cbd0c9b2f9a82ef84f2eb09d2d201390710

SHA512
c2711362abdd6e5dec85e2ceafc5822d743e3022c079a261c7abfe5a9ab2ccaa2f9f78767799cf04c75553561d2b786c7453403575edc5946bf59c64b39f6e8c

Download Submit
memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1312-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1312-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1312-3-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1312-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2540-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2540-21-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2540-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download