trickbot | bb21c36795849a5c757bdb98b66bd05870565827e7c7a73eb207d081d9e5be38

Analysis

max time kernel
601s
max time network
570s
platform
windows10_x64
resource
win10-en-20210920
submitted
12/10/2021, 18:12

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General

Target
document[2021.10.07_07-26].xlsb
Size 303KB
Sample211012-wtbs4scfgk
SHA256 bb21c36795849a5c757bdb98b66bd05870565827e7c7a73eb207d081d9e5be38
MD5 2173f1ccf5e76949f81e2842712efb41
SHA1 67ebf4ef8b80806ba0b113987657878b2c019681
SHA512 7496cd08a411f0c842b2b4a9cc93f6f37b2dacb64915f7472430c62266755a0ccb13f3605500bf2827c313e77228a230f48fa392655c7213ad89f80af43b14bf
MD5 SHA1 SHA512

Score

10^/10

trickbot fat1 banker suricata trojan

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://194.76.225.99

Extracted

Family

trickbot

Version

100019

Botnet

fat1

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

Contacts Bazar domain
Uses Emercoin blockchain domains associated with Bazar backdoor/loader.

Process spawned unexpected child process 2 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	1188	1776	cmd.exe	69
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1128	1776	cmd.exe	69

Trickbot
Developed in 2016, TrickBot is one of the more recent banking Trojans.
trojan banker trickbot
suricata: ET MALWARE TrickBot Related Activity (GET)
suricata: ET MALWARE TrickBot Related Activity (GET)
suricata
Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
1504	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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
1776	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3344	wermgr.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE
1776	EXCEL.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 2828	1776	EXCEL.EXE	72
PID 1776 wrote to memory of 2828	1776	EXCEL.EXE	72
PID 1776 wrote to memory of 1188	1776	EXCEL.EXE	73
PID 1776 wrote to memory of 1188	1776	EXCEL.EXE	73
PID 1776 wrote to memory of 1128	1776	EXCEL.EXE	76
PID 1776 wrote to memory of 1128	1776	EXCEL.EXE	76
PID 1128 wrote to memory of 1416	1128	cmd.exe	78
PID 1128 wrote to memory of 1416	1128	cmd.exe	78
PID 1416 wrote to memory of 1504	1416	rundll32.exe	79
PID 1416 wrote to memory of 1504	1416	rundll32.exe	79
PID 1416 wrote to memory of 1504	1416	rundll32.exe	79
PID 1504 wrote to memory of 1780	1504	rundll32.exe	80
PID 1504 wrote to memory of 1780	1504	rundll32.exe	80
PID 1504 wrote to memory of 1780	1504	rundll32.exe	80
PID 1504 wrote to memory of 3344	1504	rundll32.exe	81
PID 1504 wrote to memory of 3344	1504	rundll32.exe	81
PID 1504 wrote to memory of 3344	1504	rundll32.exe	81
PID 1504 wrote to memory of 3344	1504	rundll32.exe	81

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\document[2021.10.07_07-26].xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2828
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c mkdir %programdata%\svwbe
  2⤵
  - Process spawned unexpected child process
  PID:1188
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rundll32 %programdata%\svwbe\svwbe.dll,SetConsoleW
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1128
- - C:\Windows\system32\rundll32.exe
    rundll32 C:\ProgramData\svwbe\svwbe.dll,SetConsoleW
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1416
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32 C:\ProgramData\svwbe\svwbe.dll,SetConsoleW
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1504
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe
        5⤵
        
        PID:1780
    - - C:\Windows\system32\wermgr.exe
        
        C:\Windows\system32\wermgr.exe
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:3344

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/1504-290-0x0000000010001000-0x0000000010003000-memory.dmp

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memory/1504-288-0x0000000004560000-0x000000000459A000-memory.dmp

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memory/1504-289-0x00000000045B0000-0x00000000045B1000-memory.dmp

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memory/1776-119-0x000001E6D2350000-0x000001E6D2352000-memory.dmp

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memory/1776-120-0x000001E6D2350000-0x000001E6D2352000-memory.dmp

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memory/1776-129-0x00007FF91FDB0000-0x00007FF91FDC0000-memory.dmp

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memory/1776-128-0x00007FF91FDB0000-0x00007FF91FDC0000-memory.dmp

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memory/1776-123-0x00007FF923170000-0x00007FF923180000-memory.dmp

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memory/1776-121-0x000001E6D2350000-0x000001E6D2352000-memory.dmp

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memory/1776-115-0x00007FF923170000-0x00007FF923180000-memory.dmp

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memory/1776-116-0x00007FF923170000-0x00007FF923180000-memory.dmp

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memory/1776-118-0x00007FF923170000-0x00007FF923180000-memory.dmp

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memory/1776-117-0x00007FF923170000-0x00007FF923180000-memory.dmp

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memory/3344-295-0x0000020D72900000-0x0000020D72901000-memory.dmp

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memory/3344-294-0x0000020D728C0000-0x0000020D728E9000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads