072be7ebf1291dcae46879c9a38d375541148cf47f0c1bade7cfa658e98165aa

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 22:29

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General

Target

2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe
Size

49KB
MD5

450bc0b53e286bcf657a441335fbcf31
SHA1

c1777f6fe28bc3d838c5c2b238f4d779913647b6
SHA256

072be7ebf1291dcae46879c9a38d375541148cf47f0c1bade7cfa658e98165aa
SHA512

fd64dcd4b8964388de4b3bec174b56c0c820105dc83d1d5ef8d7e2a092c95c0ad294d937fbee142306cf12d7bbe4372c7e679b6e72fa7b690a802a90a5687a42
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Moccj:qmbhXDmjr5MOtEvwDpj5cDtKkQZQV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/992-13-0x0000000001F10000-0x0000000001F20000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/992-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2116-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2116-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2116-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2116-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/992-13-0x0000000001F10000-0x0000000001F20000-memory.dmp	UPX
behavioral1/memory/992-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2116-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2116-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2116 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe

pid process

992 2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2116	asih.exe

pid	process
992	2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe

description	pid	process	target process
PID 992 wrote to memory of 2116	992	2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2116	992	2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2116	992	2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2116	992	2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_450bc0b53e286bcf657a441335fbcf31_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2116

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
50KB

MD5
e883c26bb5b1ac3aca370c6607bc85a9

SHA1
228cf3994ccd85fb0fd2d5eb814d2b948871697a

SHA256
0e65051fdbef88c9fd393d9ce5dca75255b454b6bbc84fdf1dad21fb5897ec95

SHA512
2210d84782db5c27e0d716d8d34ffdc9d2131f25664e442866c46c098a2418d561ec17cedd7afb7fec1ea37de168a05fdf0c2b245ece215fdc0bf79c8dce42e6

Download Submit
memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/992-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/992-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/992-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/992-13-0x0000000001F10000-0x0000000001F20000-memory.dmp

Filesize
64KB

Download
memory/992-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2116-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2116-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2116-27-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2116-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download