6a058db88a6bb6b58065ed9aefd915bacbedb07af7d4aef6bf3de7827f46fb0c

General

Target
2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe
Size 86KB
Sample260720-dc448afy6w
SHA256 6a058db88a6bb6b58065ed9aefd915bacbedb07af7d4aef6bf3de7827f46fb0c
MD5 8b49ba6d9abf2a7acc6fb47d02a5b847
SHA1 544a2aa000a86c55071a10bedac6a16a34bedcc6
SHA512 991154a69d787b4c8d462d9db907961811be64e6f9e07d8459f8bba2238c6e6948695c1452785ba7efe1d67355737173d3f82861eafd31e2e58638b708971e3d
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlP:eSABNx6vb4RoI4pyjHYLhal01UoPXD
TLSH
T1C0838C07ABA958E9E1206870162D373493EF946F2B259BA38384FE4D9533DC1EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3404	rrrmmesk.exe

Executes dropped EXE 1 IoCs

pid	Process
3404	rrrmmesk.exe

Loads dropped DLL 1 IoCs

pid	Process
4064	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
4104	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5672	4064	WerFault.exe	93

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	2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_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	rrrmmesk.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
4104	cmd.exe
1084	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1084	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1284	2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe
3404	rrrmmesk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 4104	1284	2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe	89
PID 4104 wrote to memory of 1084	4104	cmd.exe	91
PID 4104 wrote to memory of 3404	4104	cmd.exe	92
PID 3404 wrote to memory of 4064	3404	rrrmmesk.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\rrrmmesk.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_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:4104
- - 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:1084
- - \??\c:\rrrmmesk.exe
    c:\rrrmmesk.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-20_8b49ba6d9abf2a7acc6fb47d02a5b847_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3404
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\rsdfyfshl\rckek.dll",DoVirusScan c:\rrrmmesk.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4064
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 476
        5⤵
        Program crash
        
        PID:5672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4064 -ip 4064
1⤵
PID:3936

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

rrrmmesk.exe

Path \??\c:\rrrmmesk.exe
Size 86KB
SHA256 17e224bde66bf7fd312ccb41dcdd257d4911d1013c498860afd47699533ce2ed
MD5 29b34f85ff7a576af8d2097b097c3b6b
SHA1 9db2b1514ed202529eb3ed9d8864384de18e8627
SHA512 4ddd2bdf2c5b896cdf89e7861607a9866e9eec1fd34d091d8e0b0ae20eeae13c3aedf34ce8f2f7ab9e526fbf8d083cd46f46b9bef49899c039b137c1ebfe6672
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlD:eSABNx6vb4RoI4pyjHYLhal01UoPXP
TLSH
T1A5838C07ABA958E9E1206870162D773493EF946F3B259BA38384FE4D9533DC1EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rckek.dll

Path \??\c:\rsdfyfshl\rckek.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/1284-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1284-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3404-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4064-9-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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