43739b58b7db0849592610c7d29404ca0b4e7358af258df643f698270a3e8997

Analysis

max time kernel
144s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 08:31

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General

Target
5ffcd90e30a903c9bc27fad8390325d3.exe
Size 893KB
Sample231226-kex71sbab2
SHA256 43739b58b7db0849592610c7d29404ca0b4e7358af258df643f698270a3e8997
MD5 5ffcd90e30a903c9bc27fad8390325d3
SHA1 ef10c916ea63fb3dd09c974954f7486e652c0c46
SHA512 fa1af37753df49e472def448efcfed63e32b5266442c0d0743488a747583e5e356bb9d2ade76ec4767be4d159e9e6d8f4d972b467b29837bc1e8c5a149919e32
SSDEEP 24576:9YY2DlN2D32DCiF60bSQVXRtsY9lcnCxeggEZh:WRkaedQVXXsLCx5fh
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

upx

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	5ffcd90e30a903c9bc27fad8390325d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	5ffcd90e30a903c9bc27fad8390325d3.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2704-4-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-6-0x000000002EED0000-0x000000002EF08000-memory.dmp	upx
behavioral2/memory/2704-5-0x000000002EED0000-0x000000002EF08000-memory.dmp	upx
behavioral2/memory/2704-3-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-2-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-1-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-0-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-21-0x000000002EED0000-0x000000002EF08000-memory.dmp	upx
behavioral2/memory/2704-20-0x000000002D160000-0x000000002D171000-memory.dmp	upx
behavioral2/memory/2704-22-0x000000002D160000-0x000000002D171000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2704 set thread context of 2452	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	22

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3604	2704	WerFault.exe	14
4052	2452	WerFault.exe	22

Checks processor information in registry 2 TTPs 7 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5ffcd90e30a903c9bc27fad8390325d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	5ffcd90e30a903c9bc27fad8390325d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5ffcd90e30a903c9bc27fad8390325d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	5ffcd90e30a903c9bc27fad8390325d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	5ffcd90e30a903c9bc27fad8390325d3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5ffcd90e30a903c9bc27fad8390325d3.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5ffcd90e30a903c9bc27fad8390325d3.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	5ffcd90e30a903c9bc27fad8390325d3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2704	5ffcd90e30a903c9bc27fad8390325d3.exe
2704	5ffcd90e30a903c9bc27fad8390325d3.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 2028	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	26
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 3324	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	23
PID 2704 wrote to memory of 2452	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	22
PID 2704 wrote to memory of 2452	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	22
PID 2704 wrote to memory of 2452	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	22
PID 2704 wrote to memory of 2452	2704	5ffcd90e30a903c9bc27fad8390325d3.exe	22

C:\Users\Admin\AppData\Local\Temp\5ffcd90e30a903c9bc27fad8390325d3.exe
"C:\Users\Admin\AppData\Local\Temp\5ffcd90e30a903c9bc27fad8390325d3.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\5ffcd90e30a903c9bc27fad8390325d3.exe
  C:\Users\Admin\AppData\Local\Temp\5ffcd90e30a903c9bc27fad8390325d3.exe
  2⤵
  PID:2452
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 80
    3⤵
    - Program crash
    PID:4052
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:3324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 664
  2⤵
  - Program crash
  PID:3604
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2452 -ip 2452
1⤵
PID:2456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2704 -ip 2704
1⤵
PID:3192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2704-4-0x000000002D160000-0x000000002D171000-memory.dmp

Download

memory/2704-6-0x000000002EED0000-0x000000002EF08000-memory.dmp

Download

memory/2704-9-0x00000000760B0000-0x00000000761A0000-memory.dmp

Download

memory/2704-8-0x00000000760B0000-0x00000000761A0000-memory.dmp

Download

memory/2704-14-0x000000002F1D0000-0x000000002F1D1000-memory.dmp

Download

memory/2704-15-0x00000000760B0000-0x00000000761A0000-memory.dmp

Download

memory/2704-13-0x000000002F1F0000-0x000000002F1F1000-memory.dmp

Download

memory/2704-12-0x000000002F1E0000-0x000000002F1E1000-memory.dmp

Download

memory/2704-11-0x000000002F1B0000-0x000000002F1B1000-memory.dmp

Download

memory/2704-10-0x00000000760B0000-0x00000000761A0000-memory.dmp

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memory/2704-7-0x00000000760B0000-0x00000000761A0000-memory.dmp

Download

memory/2704-5-0x000000002EED0000-0x000000002EF08000-memory.dmp

Download

memory/2704-3-0x000000002D160000-0x000000002D171000-memory.dmp

Download

memory/2704-2-0x000000002D160000-0x000000002D171000-memory.dmp

Download

memory/2704-18-0x00000000760B0000-0x00000000761A0000-memory.dmp

Download

memory/2704-19-0x0000000076F70000-0x0000000077110000-memory.dmp

Download

memory/2704-17-0x0000000076F70000-0x0000000077110000-memory.dmp

Download

memory/2704-1-0x000000002D160000-0x000000002D171000-memory.dmp

Download

memory/2704-0-0x000000002D160000-0x000000002D171000-memory.dmp

Download

memory/2704-21-0x000000002EED0000-0x000000002EF08000-memory.dmp

Download

memory/2704-20-0x000000002D160000-0x000000002D171000-memory.dmp

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memory/2704-25-0x00000000760B0000-0x00000000761A0000-memory.dmp

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memory/2704-26-0x0000000076F70000-0x0000000077110000-memory.dmp

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memory/2704-22-0x000000002D160000-0x000000002D171000-memory.dmp

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