dcd28bfe8d7601f48c0866b3dbb3fcb0eb7819e3ea84a2f5be3ae43ed98541a8

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 03:43

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General

Target

2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe
Size

39KB
MD5

98ba49351ad9440dafafe21afb49cd22
SHA1

58c4665dd26b447523da1eb3d7eb867210d93937
SHA256

dcd28bfe8d7601f48c0866b3dbb3fcb0eb7819e3ea84a2f5be3ae43ed98541a8
SHA512

af6b87054bc31247ad04fbfeb90fc3a0e544e6a9add2d704cc027aaf9358ab89fe1471639e5be4c6440beda9d6dcb956b812156b68f8d5aafe9288d4d58a2f96
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRiB:qTJu9cvMOtEvwDpjppVXzRw

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2064	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2056	2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2056-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000800000001211b-11.dat	upx
behavioral1/memory/2064-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2056-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2064-27-0x0000000000500000-0x000000000050F000-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	2024-09-12_98ba49351ad9440dafafe21afb49cd22_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 2056 wrote to memory of 2064	2056	2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe	30
PID 2056 wrote to memory of 2064	2056	2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe	30
PID 2056 wrote to memory of 2064	2056	2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe	30
PID 2056 wrote to memory of 2064	2056	2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-12_98ba49351ad9440dafafe21afb49cd22_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2056
- 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:2064

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

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
adcaed27a497df7fd6df9df7af2016b8

SHA1
cd159a2999f76b58658833a7fc1300ebb069ad8e

SHA256
a2f32cc828d443a729437e58ceffe0b0429222c87f5b5d8cfce4233d12afde2c

SHA512
e97a1b91fd5d46306cc3501694176f52d1651fe56eeb56f13d68324851361733eeaa7e8fce47f4785794cbe57e4ef33b05653a3f193454bba7b62311bcc30550

Download Submit
memory/2056-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2056-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2056-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2056-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2056-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2064-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2064-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2064-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2064-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download