766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175e

General

Target

766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe
Size

5.4MB
MD5

66eeab5c2975a225bce2746baf77b260
SHA1

725d520130a7f51442ab2aeae1dbe13b304a31a1
SHA256

766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175e
SHA512

6f7b739ad0f302533a22fcbce98239753eec29c4cd60daf51f22c5e0f1f342f6915bba864b6b6ece26c827010d3613ce25498671b9f5ef0e4df051a8f68228bb
SSDEEP

98304:p8sjk3hRWieWT0ywsagZ9VeXD3OKvRbgyNMY/HzrCU7vXG+:PjYhRPeWvnzwrOjy9//xTXd

Score

7^/10

discovery 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	WindowsLoader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	WindowsLoader.exe

Executes dropped EXE 1 IoCs

pid	Process
1168	WindowsLoader.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000023b5a-6.dat	upx
behavioral2/memory/1168-8-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral2/memory/1168-71-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral2/memory/1168-73-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral2/memory/1168-74-0x0000000000400000-0x0000000000623000-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	766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WindowsLoader.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key created	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	WindowsLoader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct	WindowsLoader.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1168	WindowsLoader.exe
1168	WindowsLoader.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	1168	WindowsLoader.exe
Token: SeIncBasePriorityPrivilege	1168	WindowsLoader.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1168	WindowsLoader.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 1168	3680	766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe	83
PID 3680 wrote to memory of 1168	3680	766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe	83
PID 3680 wrote to memory of 1168	3680	766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe	83

C:\Users\Admin\AppData\Local\Temp\766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe
"C:\Users\Admin\AppData\Local\Temp\766ce75e70a73a59213f139e449251ee061606cb467cde61f666cf5330f2175eN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Users\Admin\AppData\Local\Temp\WindowsLoader.exe
  C:\Users\Admin\AppData\Local\Temp\WindowsLoader.exe
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:1168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WindowsLoader.exe

Filesize
3.8MB

MD5
323c0fd51071400b51eedb1be90a8188

SHA1
0efc35935957c25193bbe9a83ab6caa25a487ada

SHA256
2f2aba1e074f5f4baa08b524875461889f8f04d4ffc43972ac212e286022ab94

SHA512
4c501c7135962e2f02b68d6069f2191ddb76f990528dacd209955a44972122718b9598400ba829abab2d4345b4e1a4b93453c8e7ba42080bd492a34cf8443e7e

Download Submit
memory/1168-8-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download
memory/1168-9-0x00000000025A0000-0x0000000002743000-memory.dmp

Filesize
1.6MB

Download
memory/1168-10-0x0000000002BC0000-0x0000000002BD3000-memory.dmp

Filesize
76KB

Download
memory/1168-23-0x0000000002BE0000-0x0000000002BF2000-memory.dmp

Filesize
72KB

Download
memory/1168-18-0x0000000002350000-0x0000000002360000-memory.dmp

Filesize
64KB

Download
memory/1168-31-0x0000000010000000-0x0000000010021000-memory.dmp

Filesize
132KB

Download
memory/1168-63-0x0000000002F80000-0x0000000002FA0000-memory.dmp

Filesize
128KB

Download
memory/1168-55-0x0000000002F70000-0x0000000002F80000-memory.dmp

Filesize
64KB

Download
memory/1168-47-0x0000000002F60000-0x0000000002F70000-memory.dmp

Filesize
64KB

Download
memory/1168-39-0x0000000002F40000-0x0000000002F51000-memory.dmp

Filesize
68KB

Download
memory/1168-71-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download
memory/1168-73-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download
memory/1168-74-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads