15b0d8b30ec1651ba5af8ec1c05d50534c56f1c027c4437b0a5f304b51364e5b

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25-09-2024 17:46

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General

Target

2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe
Size

45KB
MD5

8c230a868e45755a8c9ff77837da0af2
SHA1

4a5e2fb538613c0db49d2e36d07dde8b822ef13d
SHA256

15b0d8b30ec1651ba5af8ec1c05d50534c56f1c027c4437b0a5f304b51364e5b
SHA512

e50e3aa325fdc0d6e3182328b2c73775d963065f38fe0590d3c3e2b9d3a3de5dffc742fb562c64a1817f4c40021c19632f60cf072e59c4a5acd40e226de7d76f
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqu:bODOw9acifH+Yu

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2196	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1448	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1448-1-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000700000001211b-11.dat	upx
behavioral1/memory/1448-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2196-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2196-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 2196	1448	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe	30
PID 1448 wrote to memory of 2196	1448	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe	30
PID 1448 wrote to memory of 2196	1448	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe	30
PID 1448 wrote to memory of 2196	1448	2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-25_8c230a868e45755a8c9ff77837da0af2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
46KB

MD5
44cc6f3ddd1f7b48ac57ea6d63e43239

SHA1
ecdcc374d08848d3832508709bb232fe8b711b54

SHA256
7cc756111d147eeefd39a9472a4fab99960c6548835a745f06e83afae14c57cf

SHA512
eb7cdf1d7a31344d1c8610b14fb06c485a5a6758d6a47d00c7615b2ae6db61c85eecfd54fc0104444f0f0e9a5a610f61faa68f6c6872da8c0682adcf46d0ad6b

Download Submit
memory/1448-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1448-1-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1448-2-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download
memory/1448-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1448-14-0x0000000002830000-0x000000000283F000-memory.dmp

Filesize
60KB

Download
memory/1448-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2196-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2196-19-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2196-20-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2196-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download