b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8

General

Target

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe
Size

68KB
MD5

0f7e25b57a5fca0704f9506323f868d9
SHA1

e2467faeb45f794a1397e72936175d875fd5cbb4
SHA256

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8
SHA512

e2e217adad9139cd4e5a5dc992c594baf9d1ad56b7607c7a49074c254c22ad0f84c978fe137724c691974c88aa16da4621a93c768eac532d8fac0caaa2acb762
SSDEEP

768:8m2HWaXqAJplmRPEW1PiGz96XyX9TdtldE9xKd5RP:8m0wANm5EW17zgyXVdtnPd5p

Score

8^/10

defense_evasion discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2252	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe

Executes dropped EXE 1 IoCs

Processes:

oqchost.exe

pid	Process
3168	oqchost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 3 IoCs

Processes:

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exeattrib.exe

description	ioc	Process
File created	C:\Windows\Debug\oqchost.exe	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe
File opened for modification	C:\Windows\Debug\oqchost.exe	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe
File opened for modification	C:\Windows\Debug\oqchost.exe	attrib.exe

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 4 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

Processes:

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exeoqchost.exeattrib.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oqchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

oqchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	oqchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	oqchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe

description	pid	Process
Token: SeIncBasePriorityPrivilege	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe

description	pid	Process	procid_target
PID 4728 wrote to memory of 2252	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	82
PID 4728 wrote to memory of 2252	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	82
PID 4728 wrote to memory of 2252	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	82
PID 4728 wrote to memory of 2980	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	85
PID 4728 wrote to memory of 2980	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	85
PID 4728 wrote to memory of 2980	4728	b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe	85

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2252	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe
"C:\Users\Admin\AppData\Local\Temp\b43394f228c1ee900ed6e66425bdd548915aaceb2c4f17be4c8358f1cfe72ec8.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\oqchost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B43394~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2980

C:\Windows\Debug\oqchost.exe
C:\Windows\Debug\oqchost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:3168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Indicator Removal

1

T1070

File Deletion

1

T1070.004

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:\Windows\debug\oqchost.exe

Filesize
68KB

MD5
4304311f05e94bc14faded4108db6e97

SHA1
d52ffb408ced30f6b966d027f911ccf06077cf6c

SHA256
61ed4d5556bca896bf18d8799c18e7d3459793f58d60eeaa967fac0776659644

SHA512
794554ab2d496f594d24c9c66299ebcf139cb5f0ae4161a69a3eef3b127518a367fca429db7b6925e3fefc92bbd4923402fdc08106bee09c206c0900b42ac369

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads