04df7ff9517f3ad6a6eb2c262cb1242179f89d6151c160b47ff6211c8297be81

General

Target

2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe
Size

128KB
MD5

12f666b985d3de305db25b121e3c17f8
SHA1

a435d05ebccdb6a7be49b027568e7ca393fe467b
SHA256

04df7ff9517f3ad6a6eb2c262cb1242179f89d6151c160b47ff6211c8297be81
SHA512

a77e7a5a7a5b03597cb0c1aa3fb1665ead1bd58ae108bd6f6160dea3a661856ca2266902f15be08c1d36a28fd8fdbf285eaf659c30af4046016a1cc978614c6e
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1ejU2:AnBdOOtEvwDpj6z1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2360-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2360-15-0x0000000002480000-0x000000000248F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2696-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2696-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2360-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2360-15-0x0000000002480000-0x000000000248F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2696-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2696-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2360-14-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2360-15-0x0000000002480000-0x000000000248F000-memory.dmp	UPX
behavioral1/memory/2696-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2696-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2696 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe

pid process

2360 2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe

pid	process
2696	asih.exe

pid	process
2360	2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2360-14-0x0000000000500000-0x000000000050F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2696-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2696-27-0x0000000000500000-0x000000000050F000-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

Processes:

2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe

description	pid	process	target process
PID 2360 wrote to memory of 2696	2360	2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2696	2360	2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2696	2360	2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2696	2360	2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_12f666b985d3de305db25b121e3c17f8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
128KB

MD5
a38a02d406e755524b424f1f81cf5dc5

SHA1
586a2c1100b23b643a38a8907237e0c375baefbe

SHA256
d01926624f0218b8d8ee6ecb27795f769570cb69322e68221c2cc75eb190eb23

SHA512
9a8bc656a12d00d08aa7f4f6005a3e14a36b47b7557cb79e02bb3765b699b8a5aa37cafd2ef009aad023408d82f2f3f2d654d81734508d679fcc1b439cce3acc

Download Submit
memory/2360-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2360-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2360-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2360-5-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2360-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2360-15-0x0000000002480000-0x000000000248F000-memory.dmp

Filesize
60KB

Download
memory/2696-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2696-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2696-22-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2696-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads