baaab7ead6169326bcf9da597f9fcfc483d20af76d7935c9d631625ead6e8483

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
07/05/2024, 23:22

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General

Target

2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe
Size

38KB
MD5

696b173cb3fe7135f201051483f8c48d
SHA1

3823e322cddef3905c936d5cf6cf4e6e1e072cd2
SHA256

baaab7ead6169326bcf9da597f9fcfc483d20af76d7935c9d631625ead6e8483
SHA512

5b561cb1aa39c0ed93af2cfbaeadaba9385ff9ad1beffa877ea4f1815f4457f9cefaa67457ae2159a05a2356d03d8a9f764b2c8775edf3be69c28b825be042a7
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBP:qDdFJy3QMOtEvwDpjjWMl7Td5

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001227b-11.dat	CryptoLocker_rule2
behavioral1/memory/2476-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2476-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001227b-11.dat	CryptoLocker_set1
behavioral1/memory/2476-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2476-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001227b-11.dat	UPX
behavioral1/memory/2476-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2476-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2476	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2432	2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001227b-11.dat	upx
behavioral1/memory/2476-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2476-27-0x0000000000500000-0x0000000000510000-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 2432 wrote to memory of 2476	2432	2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe	28
PID 2432 wrote to memory of 2476	2432	2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe	28
PID 2432 wrote to memory of 2476	2432	2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe	28
PID 2432 wrote to memory of 2476	2432	2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_696b173cb3fe7135f201051483f8c48d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2476

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
dfb0af8f78b8ca08a8deccf0cdff3957

SHA1
3b8d956a8f325e19604b870ba65eea915ec1f3c0

SHA256
48d8fa4223120cdf338deb7b9f8037d8539a985258f50b741dea6904540b3343

SHA512
4fccda8b89e4ed8836e8a191e34107b423e6743cc91e12b5c7053c7ccf79f94aca16726dd4e65b00382b0281c128c40020933ab709a3f56549250e6edd6985f9

Download Submit
memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2432-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2432-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-19-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2476-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2476-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download