6f303f7583e3567729a0e26129709352fd8e6915d8a374ad094642c5b8855466

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
13/06/2024, 11:46

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General

Target

2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe
Size

40KB
MD5

54ea2cfcd587da7d12b842baa24d8030
SHA1

f92421f3a7081f26ff4daf4f0ca3759237cf5d1c
SHA256

6f303f7583e3567729a0e26129709352fd8e6915d8a374ad094642c5b8855466
SHA512

ebe5fc80d0af24271bcf86f4cd86a0c772be4e82d18ace13e4b59dadb51f344dc104fe84661450cef00cc1fb4ecd1791554efb4d9eed86eb5dd7aec82af04699
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYlT:qDdFJy3QMOtEvwDpjjWMl7T6T

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1992-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0007000000012120-14.dat	CryptoLocker_rule2
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1992-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0007000000012120-14.dat	CryptoLocker_set1
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1992-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0007000000012120-14.dat	UPX
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2156	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1992-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012120-14.dat	upx
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-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 1992 wrote to memory of 2156	1992	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	28
PID 1992 wrote to memory of 2156	1992	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	28
PID 1992 wrote to memory of 2156	1992	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	28
PID 1992 wrote to memory of 2156	1992	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2156

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
40KB

MD5
0d6d1dc1a9244c634421c7f78310f7dd

SHA1
a472532ee40fe0f03c408733fda0147707ce2ef5

SHA256
1aab099f1088fd94d76417da47c9182250adfd7ab8ebfd9fa11bd190038dcf42

SHA512
d8f2bf2e5725a5445a088b1278d3296e654a9e732b0404231cb0aad37c216b70e6430041447b600b8069f15ff8248cf8b31ca7324c4ceb24afac075bc96e8126

Download Submit
memory/1992-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1992-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1992-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2156-25-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2156-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download