bab1853454ca6fdd3acd471254101db1b805b601e309a49ec7b4b1fbcfc47ad7

Resubmissions

21-02-2024 14:33

240221-rw8hmsha2y 10

21-02-2024 14:31

240221-rvtm4agh7w 10

21-02-2024 11:52

240221-n1xedseg6t 10

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 14:33

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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

persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1628	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
2628	fljutmpngs.pre
2032	fljutmpngs.pre

Loads dropped DLL 3 IoCs

pid	Process
1628	svchost.exe
1628	svchost.exe
2628	fljutmpngs.pre

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral11/memory/1720-2-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-4-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-8-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-11-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-12-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-10-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-13-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/1720-14-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral11/memory/2032-45-0x0000000000400000-0x0000000000414000-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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\ykmcnbmw = "C:\\Users\\Admin\\AppData\\Roaming\\Npcbwfhml\\iznwsnbmw.exe"	ctfmon.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 2628 set thread context of 2032	2628	fljutmpngs.pre	31

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 3012 wrote to memory of 1720	3012	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	28
PID 1720 wrote to memory of 1628	1720	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	29
PID 1720 wrote to memory of 1628	1720	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	29
PID 1720 wrote to memory of 1628	1720	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	29
PID 1720 wrote to memory of 1628	1720	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	29
PID 1720 wrote to memory of 1628	1720	Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe	29
PID 1628 wrote to memory of 2628	1628	svchost.exe	30
PID 1628 wrote to memory of 2628	1628	svchost.exe	30
PID 1628 wrote to memory of 2628	1628	svchost.exe	30
PID 1628 wrote to memory of 2628	1628	svchost.exe	30
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2628 wrote to memory of 2032	2628	fljutmpngs.pre	31
PID 2032 wrote to memory of 1568	2032	fljutmpngs.pre	32
PID 2032 wrote to memory of 1568	2032	fljutmpngs.pre	32
PID 2032 wrote to memory of 1568	2032	fljutmpngs.pre	32
PID 2032 wrote to memory of 1568	2032	fljutmpngs.pre	32
PID 2032 wrote to memory of 1568	2032	fljutmpngs.pre	32

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
- Suspicious use of WriteProcessMemory
PID:3012
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Deletes itself
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Users\Admin\AppData\Local\Temp\fljutmpngs.pre
      C:\Users\Admin\AppData\Local\Temp\fljutmpngs.pre
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:2628
    - - C:\Users\Admin\AppData\Local\Temp\fljutmpngs.pre
        
        C:\Users\Admin\AppData\Local\Temp\fljutmpngs.pre
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:2032
      - C:\Windows\SysWOW64\ctfmon.exe
        
        ctfmon.exe
        6⤵
        Adds Run key to start application
        
        PID:1568

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
102KB

MD5
1b2d2a4b97c7c2727d571bbf9376f54f

SHA1
1fc29938ec5c209ba900247d2919069b320d33b0

SHA256
7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e

SHA512
506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0

Download Submit
memory/1568-55-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1568-50-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1568-47-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1628-16-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1628-20-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1628-15-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

Filesize
56KB

Download
memory/1720-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-12-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1720-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2032-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads