efd17599d639ef97aece1719ec89fd39904373c1971a4455ee587f18a0485887

General

Target

2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe
Size

81KB
MD5

7109bb392a2903e83b464765b9e01640
SHA1

462665e893f3a6615f801644986f768c5f5fafaa
SHA256

efd17599d639ef97aece1719ec89fd39904373c1971a4455ee587f18a0485887
SHA512

2038fa2ef421679a9dd943f9596b10cfe2322428b8624314f8b28e149119373e82376f8b0af1e97b18da5552e15812333c29c7cb7f148986e529868d6db4092c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QpSxI:zCsanOtEvwDpj9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1404-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2700-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/1404-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2700-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/1404-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2700-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1404 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe

pid process

2700 2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe

pid	process
1404	misid.exe

pid	process
2700	2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/1404-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2700-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1404-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe

description	pid	process	target process
PID 2700 wrote to memory of 1404	2700	2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe	misid.exe
PID 2700 wrote to memory of 1404	2700	2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe	misid.exe
PID 2700 wrote to memory of 1404	2700	2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe	misid.exe
PID 2700 wrote to memory of 1404	2700	2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_7109bb392a2903e83b464765b9e01640_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2700

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1404

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
81KB

MD5
47a3f02e2871f3dc472061a165d62a7e

SHA1
8b9d438696ec408aa5e6ddd9d8d286b2e1207b47

SHA256
73a16920da922c64d9e20424ef30474711a2c176363724d07fe2fe08cb3533c1

SHA512
e912d27f3d80217f60520657de693356e1ce92d52189380d8cdb73939d2287397c98c892da71dc99ddea8ec14758eb3c1b13dabb5739385756541b5f9778d6a2

Download Submit
memory/1404-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1404-18-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1404-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2700-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2700-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2700-9-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2700-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads