47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78

General

Target

47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe
Size

168KB
MD5

b7493d80bfe67658e3cdfb9be7acab36
SHA1

43e047458249be053d21eee5468d7e7e93321c41
SHA256

47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78
SHA512

1ab5c88ecf6068fe2ff7173ce4ef3dde2591eb6b071602a107ef6ae2eb513adf39075ff94d80412e1b6d9a2fda91b1bf5022fed4195a61a4685131eef37ff51e
SSDEEP

1536:i2WDcOpULCH0a+TNXyyXetH28JZveKivnmOOO/:zWDuLzZXyyXeECveDnmOOO/

Score

8^/10

defense_evasion discovery evasion upx

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

pid	Process
5000	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	nkmhost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2740-0-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/files/0x00090000000233af-3.dat	upx
behavioral2/memory/2740-5-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/2664-6-0x0000000000400000-0x0000000000429000-memory.dmp	upx

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

description	ioc	Process
File created	C:\Windows\Debug\nkmhost.exe	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe
File opened for modification	C:\Windows\Debug\nkmhost.exe	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe
File opened for modification	C:\Windows\Debug\nkmhost.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nkmhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.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

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 5000	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	84
PID 2740 wrote to memory of 5000	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	84
PID 2740 wrote to memory of 5000	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	84
PID 2740 wrote to memory of 1872	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	90
PID 2740 wrote to memory of 1872	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	90
PID 2740 wrote to memory of 1872	2740	47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe	90

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
5000	attrib.exe

C:\Users\Admin\AppData\Local\Temp\47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.exe
"C:\Users\Admin\AppData\Local\Temp\47d523369db38a6a8507b1ddf7547a60e8e93e5f0e6f466076313dae85c6ef78.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:2740
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\nkmhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:5000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\47D523~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872

C:\Windows\Debug\nkmhost.exe
C:\Windows\Debug\nkmhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2664

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\debug\nkmhost.exe

Filesize
168KB

MD5
0106766ca7d966c4d8b9899cd545f01e

SHA1
c4589c73a05c2872a067a29cb77c0a3155dd1ad1

SHA256
05a008ca1a766543b69a75cd78525501a1bf0eb1f3e82682acd70c209bc1319f

SHA512
032f077c27eab8549f43194aad55a9dcbf479f33b53b200b0dea02e656772b81dc7733faae53c607e04bc5d2a715b01a05153ae2fad6cec95f9ae92a99de4f16

Download Submit
memory/2664-6-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2740-0-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2740-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads