1d3b41a621b7e377118769557b041fbc7143566621891a493fc22656d893f796

Analysis

max time kernel
117s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-03-2024 18:00

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General

Target

b805cfc2646c7d1060652a9a4eecaf3b.exe
Size

1.5MB
MD5

b805cfc2646c7d1060652a9a4eecaf3b
SHA1

4469f441f6eeee340958ded387b728cdaf0f0250
SHA256

1d3b41a621b7e377118769557b041fbc7143566621891a493fc22656d893f796
SHA512

b418f2676f6fe17c5acd8a448bd1b520cd943898107023a120ac949f07e90fd5a64380b3c6c268dc2951c8569dd8567e004eeb6c454042fc27cbbe7991742b88
SSDEEP

24576:MnbHSUVEWTqp7UQbKcMmtiprF1kEYKc46tq8/97SxC2XrTyLUDudCTyOTp0:MnbHBVEWTqp7/xMmoFXYKktq+97SxNnC

Score

7^/10

evasion persistence themida

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2052	gncbdg.exe
2072	gncbdg.exe
2828	hcbsmw.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Wine	b805cfc2646c7d1060652a9a4eecaf3b.exe

Loads dropped DLL 5 IoCs

pid	Process
2524	b805cfc2646c7d1060652a9a4eecaf3b.exe
2524	b805cfc2646c7d1060652a9a4eecaf3b.exe
2052	gncbdg.exe
2524	b805cfc2646c7d1060652a9a4eecaf3b.exe
2524	b805cfc2646c7d1060652a9a4eecaf3b.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2748-0-0x0000000010000000-0x00000000102EB000-memory.dmp	themida
behavioral1/memory/2748-3-0x0000000010000000-0x00000000102EB000-memory.dmp	themida
behavioral1/memory/2748-15-0x0000000010000000-0x00000000102EB000-memory.dmp	themida

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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	b805cfc2646c7d1060652a9a4eecaf3b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2052 set thread context of 2072	2052	gncbdg.exe	30

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2748	b805cfc2646c7d1060652a9a4eecaf3b.exe
2072	gncbdg.exe
2072	gncbdg.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2748 wrote to memory of 2524	2748	b805cfc2646c7d1060652a9a4eecaf3b.exe	28
PID 2524 wrote to memory of 2052	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	29
PID 2524 wrote to memory of 2052	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	29
PID 2524 wrote to memory of 2052	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	29
PID 2524 wrote to memory of 2052	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	29
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2052 wrote to memory of 2072	2052	gncbdg.exe	30
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21
PID 2524 wrote to memory of 2828	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	31
PID 2524 wrote to memory of 2828	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	31
PID 2524 wrote to memory of 2828	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	31
PID 2524 wrote to memory of 2828	2524	b805cfc2646c7d1060652a9a4eecaf3b.exe	31
PID 2828 wrote to memory of 2304	2828	hcbsmw.exe	32
PID 2828 wrote to memory of 2304	2828	hcbsmw.exe	32
PID 2828 wrote to memory of 2304	2828	hcbsmw.exe	32
PID 2828 wrote to memory of 2304	2828	hcbsmw.exe	32
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21
PID 2072 wrote to memory of 1408	2072	gncbdg.exe	21

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1408
- C:\Users\Admin\AppData\Local\Temp\b805cfc2646c7d1060652a9a4eecaf3b.exe
  "C:\Users\Admin\AppData\Local\Temp\b805cfc2646c7d1060652a9a4eecaf3b.exe"
  2⤵
  - Identifies Wine through registry keys
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Users\Admin\AppData\Local\Temp\b805cfc2646c7d1060652a9a4eecaf3b.exe
    C:\Users\Admin\AppData\Local\Temp\b805cfc2646c7d1060652a9a4eecaf3b.exe
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:2524
  - - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\gncbdg.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\gncbdg.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:2052
    - - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\gncbdg.exe
        
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\gncbdg.exe
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2072
  - - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\hcbsmw.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\hcbsmw.exe
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2828
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        
        PID:2304

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\IXP000.TMP\gncbdg.exe

Filesize
33KB

MD5
2a8b8f438aa34414cb85f8a1631f5188

SHA1
275210680630c0e2c0dcdc2ba1a83a5af3cb0fbd

SHA256
80e6e1c874832caff48017c5513a8f7e3a65b1dfac76fe22cca6c2e91dbb9b76

SHA512
d51a1ca86bbb583acda1c49954363221c0ff1ec54d26b1c6b63fd74372153e4a8ff0249e206b0f477602d26b6fed86e2fd635d29e441d0c913faba822df358ae

Download Submit
\Users\Admin\AppData\Local\Temp\IXP000.TMP\hcbsmw.exe

Filesize
133KB

MD5
c68cb7cfc28a8da48b445ba450f230ec

SHA1
b6a02cb4b57e994b8fc7e7712e089a8886e609a2

SHA256
3e043850157d2dc33eb178ee60222ea093bb3fb042c823f649ee2fc56c0923c9

SHA512
d8477d441c4bf88671169c1bd44e268817819c8c90caefd0ecd21e4d384ed5d0880fc9abb3b708e4e5e5596c2b920ee11355973920ff6e3ba783311c5e88f95f

Download Submit
memory/1408-56-0x000000007EFC0000-0x000000007EFC6000-memory.dmp

Filesize
24KB

Download
memory/1408-41-0x000000007FFF0000-0x000000007FFF1000-memory.dmp

Filesize
4KB

Download
memory/2072-36-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2072-30-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2072-68-0x0000000000020000-0x0000000000031000-memory.dmp

Filesize
68KB

Download
memory/2072-38-0x0000000000020000-0x0000000000031000-memory.dmp

Filesize
68KB

Download
memory/2072-37-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2072-33-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2524-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-9-0x0000000001000000-0x000000000102A000-memory.dmp

Filesize
168KB

Download
memory/2524-55-0x0000000001000000-0x000000000102A000-memory.dmp

Filesize
168KB

Download
memory/2524-16-0x0000000001000000-0x000000000102A000-memory.dmp

Filesize
168KB

Download
memory/2524-12-0x0000000001000000-0x000000000102A000-memory.dmp

Filesize
168KB

Download
memory/2524-14-0x0000000001000000-0x000000000102A000-memory.dmp

Filesize
168KB

Download
memory/2748-8-0x0000000004070000-0x0000000004071000-memory.dmp

Filesize
4KB

Download
memory/2748-5-0x0000000004060000-0x0000000004061000-memory.dmp

Filesize
4KB

Download
memory/2748-0-0x0000000010000000-0x00000000102EB000-memory.dmp

Filesize
2.9MB

Download
memory/2748-15-0x0000000010000000-0x00000000102EB000-memory.dmp

Filesize
2.9MB

Download
memory/2748-7-0x0000000004050000-0x0000000004051000-memory.dmp

Filesize
4KB

Download
memory/2748-3-0x0000000010000000-0x00000000102EB000-memory.dmp

Filesize
2.9MB

Download
memory/2748-2-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2748-4-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/2748-1-0x0000000001C80000-0x0000000001D7E000-memory.dmp

Filesize
1016KB

Download
memory/2748-6-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/2828-52-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download