530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390

Analysis

max time kernel
113s
max time network
102s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/01/2025, 17:15

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General

Target
530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe
Size 205KB
Sample250120-vsvddsznhl
SHA256 530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390
MD5 b48d5f443eda99395fdd6098600759ee
SHA1 cc5a7ac54000e37c7083bc0ab019bfa3cfa18601
SHA512 356142040ed40d948875f9790e92a69b3fe04f6114f185fba88db5dccdaceb9f51630e873aeb86c0f50bdce2e2d3b7d527e0691b1d23c5baa6cab77920fbf994
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTn:X2vnSwjaOcADw9cUeCOfR
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2740	xemcd.exe

Executes dropped EXE 2 IoCs

pid	Process
2740	xemcd.exe
2640	dkwpm.exe

Loads dropped DLL 7 IoCs

pid	Process
2804	cmd.exe
2804	cmd.exe
2740	xemcd.exe
2640	dkwpm.exe
2640	dkwpm.exe
2640	dkwpm.exe
2640	dkwpm.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\mitnirfyu\\dkwpm.exe \"c:\\Program Files\\mitnirfyu\\dkwpm.dll\",Compliance"	dkwpm.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\y:	dkwpm.exe
File opened (read-only)	\??\g:	dkwpm.exe
File opened (read-only)	\??\h:	dkwpm.exe
File opened (read-only)	\??\p:	dkwpm.exe
File opened (read-only)	\??\u:	dkwpm.exe
File opened (read-only)	\??\v:	dkwpm.exe
File opened (read-only)	\??\x:	dkwpm.exe
File opened (read-only)	\??\m:	dkwpm.exe
File opened (read-only)	\??\n:	dkwpm.exe
File opened (read-only)	\??\q:	dkwpm.exe
File opened (read-only)	\??\r:	dkwpm.exe
File opened (read-only)	\??\s:	dkwpm.exe
File opened (read-only)	\??\a:	dkwpm.exe
File opened (read-only)	\??\b:	dkwpm.exe
File opened (read-only)	\??\j:	dkwpm.exe
File opened (read-only)	\??\t:	dkwpm.exe
File opened (read-only)	\??\w:	dkwpm.exe
File opened (read-only)	\??\l:	dkwpm.exe
File opened (read-only)	\??\o:	dkwpm.exe
File opened (read-only)	\??\z:	dkwpm.exe
File opened (read-only)	\??\e:	dkwpm.exe
File opened (read-only)	\??\i:	dkwpm.exe
File opened (read-only)	\??\k:	dkwpm.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	dkwpm.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\mitnirfyu	xemcd.exe
File created	\??\c:\Program Files\mitnirfyu\dkwpm.dll	xemcd.exe
File created	\??\c:\Program Files\mitnirfyu\dkwpm.exe	xemcd.exe
File opened for modification	\??\c:\Program Files\mitnirfyu\dkwpm.exe	xemcd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	xemcd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dkwpm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
2804	cmd.exe
2696	PING.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	dkwpm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dkwpm.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2696	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2640	dkwpm.exe
2640	dkwpm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2640	dkwpm.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2084	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe
2740	xemcd.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2804	2084	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe	31
PID 2084 wrote to memory of 2804	2084	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe	31
PID 2084 wrote to memory of 2804	2084	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe	31
PID 2084 wrote to memory of 2804	2084	530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe	31
PID 2804 wrote to memory of 2696	2804	cmd.exe	33
PID 2804 wrote to memory of 2696	2804	cmd.exe	33
PID 2804 wrote to memory of 2696	2804	cmd.exe	33
PID 2804 wrote to memory of 2696	2804	cmd.exe	33
PID 2804 wrote to memory of 2740	2804	cmd.exe	34
PID 2804 wrote to memory of 2740	2804	cmd.exe	34
PID 2804 wrote to memory of 2740	2804	cmd.exe	34
PID 2804 wrote to memory of 2740	2804	cmd.exe	34
PID 2740 wrote to memory of 2640	2740	xemcd.exe	35
PID 2740 wrote to memory of 2640	2740	xemcd.exe	35
PID 2740 wrote to memory of 2640	2740	xemcd.exe	35
PID 2740 wrote to memory of 2640	2740	xemcd.exe	35

C:\Users\Admin\AppData\Local\Temp\530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe
"C:\Users\Admin\AppData\Local\Temp\530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xemcd.exe "C:\Users\Admin\AppData\Local\Temp\530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2696
- - C:\Users\Admin\AppData\Local\Temp\xemcd.exe
    C:\Users\Admin\AppData\Local\Temp\\xemcd.exe "C:\Users\Admin\AppData\Local\Temp\530f8926ee6d2395fed541bab79d4011f43a73d40f76995245d34abbeb149390.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - \??\c:\Program Files\mitnirfyu\dkwpm.exe
      "c:\Program Files\mitnirfyu\dkwpm.exe" "c:\Program Files\mitnirfyu\dkwpm.dll",Compliance C:\Users\Admin\AppData\Local\Temp\xemcd.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2640

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

dkwpm.dll

Path \??\c:\Program Files\mitnirfyu\dkwpm.dll
Size 141KB
SHA256 0d49466a396a8a5f49bb402b38a09bce6b0e23f82de5b5663bbdcff6415797c2
MD5 5c1b0e6edbc1a2b02927b856320696a6
SHA1 d634282813f1e3f9e88d1cb2bbc49d2903194b30
SHA512 9c2bd14a9028a0a1e3e440305f5a70e18e19cb5be261abc22ab2c79177d95dee0f77556699bc6d792a17ea572e00c918b443fd523b75381bb273ade80ae7a584
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lB9:RGMmfToTJY6zpSyvkGSn1tlL
MD5 SHA1 SHA512 SSDEEP

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dkwpm.exe

Path \Program Files\mitnirfyu\dkwpm.exe
Size 43KB
SHA256 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
MD5 51138beea3e2c21ec44d0932c71762a8
SHA1 8939cf35447b22dd2c6e6f443446acc1bf986d58
SHA512 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
SSDEEP 768:mD+ellQvZSazSRqbSEln5IyYpamDjobj8SpM:E+QWvZhSRqln5IUmDjoXV
MD5 SHA1 SHA512 SSDEEP

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xemcd.exe

Path \Users\Admin\AppData\Local\Temp\xemcd.exe
Size 205KB
SHA256 ff0d0137a83e0774723a6b95c40ffdaec616a5b5df8dac7c73df760b072ffed9
MD5 e4e77babffed5961e5cd072264b8e374
SHA1 748b03a947c7672f77f5374b10b2a237db615e96
SHA512 607f17c5c9de4ca75d182c7cf10e48031a3f540106ea556fd0911a93077e83ab7d0b2b9bef79b559925271aacb4663d1d85534d14ef1dc303797c0ca5b7774cd
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
MD5 SHA1 SHA512 SSDEEP

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memory/2084-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2084-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2084-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2084-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2640-28-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2640-27-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2640-29-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2640-32-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2740-12-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2740-11-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2740-20-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2804-8-0x0000000000190000-0x00000000001DA000-memory.dmp

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memory/2804-9-0x0000000000190000-0x00000000001DA000-memory.dmp

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