28cc4a9984a25cfa560e945da3f172fbda9ad081aeee88a2ab626db8885e0776

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28-09-2024 23:39

240928-3nsyrs1dnj 10

23-09-2024 12:03

240923-n79naswcml 10

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-09-2024 12:03

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General

Target

Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
Size

102KB
MD5

1b2d2a4b97c7c2727d571bbf9376f54f
SHA1

1fc29938ec5c209ba900247d2919069b320d33b0
SHA256

7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e
SHA512

506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0
SSDEEP

1536:jj+Rj1lGIXKSmE17v97yiqHGMRPtbsLW8/V2k12v1/BDxVyCfCrCAc:jjw6Sf0iqmMnb2W02v3mCf4Nc

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2836	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
1932	wfuiprchks.pre
2172	wfuiprchks.pre

Loads dropped DLL 3 IoCs

pid	Process
2836	svchost.exe
2836	svchost.exe
1932	wfuiprchks.pre

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral11/memory/2796-8-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-11-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-4-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-2-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-14-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-12-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-13-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2796-17-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2172-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\buxteycn = "C:\\Users\\Admin\\AppData\\Roaming\\Mficprybsyn\\nfwlchreycn.exe"	svchost.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2116 set thread context of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 1932 set thread context of 2172	1932	wfuiprchks.pre	33

System Location Discovery: System Language Discovery 1 TTPs 6 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	wfuiprchks.pre
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wfuiprchks.pre
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2116 wrote to memory of 2796	2116	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	30
PID 2796 wrote to memory of 2836	2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	31
PID 2796 wrote to memory of 2836	2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	31
PID 2796 wrote to memory of 2836	2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	31
PID 2796 wrote to memory of 2836	2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	31
PID 2796 wrote to memory of 2836	2796	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	31
PID 2836 wrote to memory of 1932	2836	svchost.exe	32
PID 2836 wrote to memory of 1932	2836	svchost.exe	32
PID 2836 wrote to memory of 1932	2836	svchost.exe	32
PID 2836 wrote to memory of 1932	2836	svchost.exe	32
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 1932 wrote to memory of 2172	1932	wfuiprchks.pre	33
PID 2172 wrote to memory of 2192	2172	wfuiprchks.pre	34
PID 2172 wrote to memory of 2192	2172	wfuiprchks.pre	34
PID 2172 wrote to memory of 2192	2172	wfuiprchks.pre	34
PID 2172 wrote to memory of 2192	2172	wfuiprchks.pre	34
PID 2172 wrote to memory of 2192	2172	wfuiprchks.pre	34

C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
"C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
  "C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Deletes itself
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Users\Admin\AppData\Local\Temp\wfuiprchks.pre
      C:\Users\Admin\AppData\Local\Temp\wfuiprchks.pre
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1932
    - - C:\Users\Admin\AppData\Local\Temp\wfuiprchks.pre
        
        C:\Users\Admin\AppData\Local\Temp\wfuiprchks.pre
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2172
      - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        6⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        
        PID:2192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\wfuiprchks.pre

Filesize
102KB

MD5
1b2d2a4b97c7c2727d571bbf9376f54f

SHA1
1fc29938ec5c209ba900247d2919069b320d33b0

SHA256
7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e

SHA512
506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0

Download Submit
memory/2172-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2172-51-0x0000000000410000-0x0000000000413000-memory.dmp

Filesize
12KB

Download
memory/2192-59-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2192-53-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2192-52-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2192-47-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2796-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-12-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2796-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2836-15-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2836-29-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2836-19-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/2836-16-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads