974b19920567ccacb2d1f38010e98cf81a802c9b2378a1b6680c4019ee233aff

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
09-10-2024 06:52

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General

Target

2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe
Size

60KB
MD5

82fe9a9e833589478c5436874993167e
SHA1

6ec00e6a4b5c804eb10674f378b3d06ae0e16528
SHA256

974b19920567ccacb2d1f38010e98cf81a802c9b2378a1b6680c4019ee233aff
SHA512

9667d6d9a29178eb7eb53bef7e0819fd0b1f2fa074ad9e8b07ee39cd90f3213eb674eaab8085982196475b69394ba94aa12aaef19a8162c6c5e735939ad3b528
SSDEEP

768:76LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axK3hV:76QFElP6n+gKmddpMOtEvwDpj9aYaQhV

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2928	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2720	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2720-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012283-11.dat	upx
behavioral1/memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2720-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2928-27-0x0000000000500000-0x0000000000510000-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	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 2928	2720	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe	30
PID 2720 wrote to memory of 2928	2720	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe	30
PID 2720 wrote to memory of 2928	2720	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe	30
PID 2720 wrote to memory of 2928	2720	2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-09_82fe9a9e833589478c5436874993167e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2928

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\asih.exe

Filesize
60KB

MD5
82e55217d6e7338ade5e2c6284a395dc

SHA1
c26bcc73cd0fa0668ce4e8a0419bfde459d4077b

SHA256
3bf7fec2e0fa2bb39d9169663848636183987dc22ac9fe90a71413d11ec82ec5

SHA512
37febb19cc7d3064347f103c0f982503e97c26740791f674aa088112bca9c2719520b35baee7b7aa96e72743dea49906d1a568b7435a7ca5e2a2dc2705a7f099

Download Submit
memory/2720-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2720-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2720-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2720-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2720-13-0x00000000021F0000-0x0000000002200000-memory.dmp

Filesize
64KB

Download
memory/2720-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2928-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2928-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2928-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download