e01d9c12ce59def16d3aa593e461d13173b98d4cef9658834f756ff4edbfd3d7

General

Target
d171704501b00985c038ef6343b27f50.exe
Size 978KB
Sample210313-az9sa2cp32
SHA256 e01d9c12ce59def16d3aa593e461d13173b98d4cef9658834f756ff4edbfd3d7
MD5 d171704501b00985c038ef6343b27f50
SHA1 bdd5de4b7baa4632ce2a01fc850df1fa13ed8467
SHA512 de67037a3b5cd2fa86ec5bdc6b431becd26f0a07c1b40657086f6ab2a8598a6b07cbfa39840c3d0f3676d71534d73039203839ceb532856dfa71b921eb0f8492
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
34	2712	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
804	Essa.com
2784	Essa.com

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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	Essa.com
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Essa.com

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings	Essa.com

Modifies system certificate store 2 TTPs 2 IoCs

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	Essa.com
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	Essa.com

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
768	PING.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 2736	1144	d171704501b00985c038ef6343b27f50.exe	75
PID 1144 wrote to memory of 2736	1144	d171704501b00985c038ef6343b27f50.exe	75
PID 1144 wrote to memory of 2736	1144	d171704501b00985c038ef6343b27f50.exe	75
PID 1144 wrote to memory of 3828	1144	d171704501b00985c038ef6343b27f50.exe	77
PID 1144 wrote to memory of 3828	1144	d171704501b00985c038ef6343b27f50.exe	77
PID 1144 wrote to memory of 3828	1144	d171704501b00985c038ef6343b27f50.exe	77
PID 3828 wrote to memory of 676	3828	cmd.exe	79
PID 3828 wrote to memory of 676	3828	cmd.exe	79
PID 3828 wrote to memory of 676	3828	cmd.exe	79
PID 676 wrote to memory of 2648	676	cmd.exe	81
PID 676 wrote to memory of 2648	676	cmd.exe	81
PID 676 wrote to memory of 2648	676	cmd.exe	81
PID 676 wrote to memory of 804	676	cmd.exe	82
PID 676 wrote to memory of 804	676	cmd.exe	82
PID 676 wrote to memory of 804	676	cmd.exe	82
PID 676 wrote to memory of 768	676	cmd.exe	83
PID 676 wrote to memory of 768	676	cmd.exe	83
PID 676 wrote to memory of 768	676	cmd.exe	83
PID 804 wrote to memory of 2784	804	Essa.com	84
PID 804 wrote to memory of 2784	804	Essa.com	84
PID 804 wrote to memory of 2784	804	Essa.com	84
PID 2784 wrote to memory of 2248	2784	Essa.com	88
PID 2784 wrote to memory of 2248	2784	Essa.com	88
PID 2784 wrote to memory of 2248	2784	Essa.com	88
PID 2784 wrote to memory of 2712	2784	Essa.com	89
PID 2784 wrote to memory of 2712	2784	Essa.com	89
PID 2784 wrote to memory of 2712	2784	Essa.com	89

C:\Users\Admin\AppData\Local\Temp\d171704501b00985c038ef6343b27f50.exe
"C:\Users\Admin\AppData\Local\Temp\d171704501b00985c038ef6343b27f50.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c echo iVNx
  2⤵
  PID:2736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c C:\Windows\system32\cmd.exe < Puerile.ini
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3828
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:676
  - - C:\Windows\SysWOW64\findstr.exe
      findstr /V /R "^DlxfciNLvjxgeSkjwcdpocskkaMguGqmyzQnrjwhmlDwsWGEBHpUTJPoTorrxnEQkUpJeNpOxeJYSfTfMoNnbyFcDIFVpXTwFMQbMXCOnxAQqRfDgNdjKuaygNyxigFvpHzymvCOGZqeFPcMzw$" Dov.xlam
      4⤵
      PID:2648
  - - C:\Users\Admin\AppData\Roaming\cjSjHgEAWjdn\Essa.com
      Essa.com Sul.wmv
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:804
    - - C:\Users\Admin\AppData\Roaming\cjSjHgEAWjdn\Essa.com
        
        C:\Users\Admin\AppData\Roaming\cjSjHgEAWjdn\Essa.com Sul.wmv
        5⤵
        Executes dropped EXE
        Checks processor information in registry
        Modifies registry class
        Modifies system certificate store
        Suspicious use of WriteProcessMemory
        
        PID:2784
      - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\mdadwgmki.vbs"
        6⤵
        
        PID:2248
      - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vbeqmurslm.vbs"
        6⤵
        Blocklisted process makes network request
        
        PID:2712
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 30
      4⤵
      Runs ping.exe
      PID:768