48d0e77737b3ed9bcecae5a02188eb452d1ff96e2f56affec19ecc61cb8e6ffb

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:00

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General

Target

2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe
Size

64KB
MD5

f1ae0fa9760b7ad6b5d125336a5f462e
SHA1

154047e2c753022adb4035af55a092d0542627cf
SHA256

48d0e77737b3ed9bcecae5a02188eb452d1ff96e2f56affec19ecc61cb8e6ffb
SHA512

094603f2e8a2b472de4849b7d660c3c16d1e68a306702c9aa7973ae7b627013f90f96adf5c3940ebd1593dc146fff191c3e1f6da99c36d3d73b674b2c97c55ec
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi1:BbdDmjr+OtEvwDpjM8c

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2968-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1956-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2968-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2968-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1956-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2968-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2968-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1956-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2968-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2968 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe

pid process

1956 2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2968	asih.exe

pid	process
1956	2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe

description	pid	process	target process
PID 1956 wrote to memory of 2968	1956	2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe	asih.exe
PID 1956 wrote to memory of 2968	1956	2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe	asih.exe
PID 1956 wrote to memory of 2968	1956	2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe	asih.exe
PID 1956 wrote to memory of 2968	1956	2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_f1ae0fa9760b7ad6b5d125336a5f462e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1956

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2968

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
64KB

MD5
19ca8f17f8f3c8a9d46939bea7745fa9

SHA1
db95ebe8b3cda86e86005645b651f2f96c2df831

SHA256
f2e53a1ccec70a245819367398889e66c569ce86f2961f794f9cfcf8f7907c77

SHA512
d07e27a8aa91211b768f45386a0fbde9fb3972c1ad3219712fad4162df67bbe52b73c8152eb690cbc02acf73dad77d28f54c134148783b81a61a509a66c180e2

Download Submit
memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1956-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1956-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1956-3-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/1956-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2968-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2968-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2968-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2968-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download