0a1750977ca4595ec99210bf5e8443ccfea3acc63a0d1aa6a618604329d4521f

General

Target
2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe
Size 84KB
Sample260821-e2jp9ahf28
SHA256 0a1750977ca4595ec99210bf5e8443ccfea3acc63a0d1aa6a618604329d4521f
MD5 6cf8e7709d6ffda92b588edae2b1f67b
SHA1 7336ac007e60d2450824a0decafaa0022454f813
SHA512 67b5f120415fc83c5070adc70a5fab1dd1b4d0626bd44c48a026dfd9c5c3b297c845b6280cd5b5dd88ef3859b98327dce8af986152d0a05399333504aeab2d81
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl7:eSABNx6vb4RoI4pyjHYLhal01UoPXf
TLSH
T1F9839D0BABAA58D9E120AC70152D377593EF946F3B259B938344FE4D9533CC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3028	thdah.exe

Executes dropped EXE 1 IoCs

pid	Process
3028	thdah.exe

Loads dropped DLL 1 IoCs

pid	Process
5672	rundll32.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
6040	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3864	5672	WerFault.exe	90

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	2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thdah.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
6040	cmd.exe
1616	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1616	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4832	2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe
3028	thdah.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 6040	4832	2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe	86
PID 6040 wrote to memory of 1616	6040	cmd.exe	88
PID 6040 wrote to memory of 3028	6040	cmd.exe	89
PID 3028 wrote to memory of 5672	3028	thdah.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\thdah.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:6040
- - 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:1616
- - \??\c:\thdah.exe
    c:\thdah.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-21_6cf8e7709d6ffda92b588edae2b1f67b_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3028
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\lyoyavq\ofzwf.dll",DoVirusScan c:\thdah.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:5672
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 5672 -s 560
        5⤵
        Program crash
        
        PID:3864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5672 -ip 5672
1⤵
PID:920

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

thdah.exe

Path C:\thdah.exe
Size 84KB
SHA256 62a0cdd5fcc700555d9fc004d7d4eafaa2c18d6114fd1fd68a49dee408ec0594
MD5 0d8257af96754f27204119563efd9d8d
SHA1 4bf7a8e118efa07c28c1f85c270de06901c67039
SHA512 047a84c970bee8e55e65f7c180b0ab6614807ebe5982b128ea9cb713972ba6e63097cc610b239144375ef36bdad8922025582809960c97105b3953dba4d6823e
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlv:eSABNx6vb4RoI4pyjHYLhal01UoPXL
TLSH
T1BD839D0BABAA58D9E120AC70152D377593EF946E3B259BA38344FE4D9533CC1EC3614A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ofzwf.dll

Path \??\c:\lyoyavq\ofzwf.dll
Size 50KB
SHA256 7604a0d3e695ff2f47b2961a860aa77e41952df48c132c18ac8d84e6ed3ee8eb
MD5 18cc91cc0c4c41e39a2c5310e760f0ef
SHA1 aaacc94db8d8a37e5d34878aa259d3274a5ff2a7
SHA512 8abba5220a7216288d0d2c683a5d01b796b1179464a2432eda991004348223c822c54ab39fd19302ff01974ec8d026e98280e9f1bdb67178126d75a974ecc7e7
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvo9:ZPrG57TzDxJS6Etx/ZvO
TLSH
T1AB33E178E1F4B8F6E46EAB345D82146DB1C16BD34D3080BA079224AF6C37E578B52731
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3028-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4832-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4832-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5672-10-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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