trickbot | aed5f5bbec1f7f8ea9010f7388f76b801b443c5ce691d0c008b6058f290e51da

General

Target

Attachment_777622.xlsb
Size

81KB
MD5

3079d4778cfc7959eb2a7e54a57769a4
SHA1

13074fe13d6dd531e4f5293c3e15eaa8ed6208a4
SHA256

aed5f5bbec1f7f8ea9010f7388f76b801b443c5ce691d0c008b6058f290e51da
SHA512

09a6cb132c84a015b504ce7e10c700dd4b78a36b1d514b4d8f92dca444017aec883a71600776e41ec9924f786cb9aed0256beccc541ac665566fd99875272eb5

Score

10^/10

trickbot mon88 banker trojan

Malware Config

Extracted

Family

trickbot

Version

100012

Botnet

mon88

C2

41.77.134.250:449

45.155.173.242:443

192.162.238.186:449

142.112.79.223:449

122.2.28.70:449

154.126.176.30:449

45.230.244.20:443

182.253.107.34:443

200.52.147.93:443

123.200.26.246:449

131.255.106.152:449

177.85.133.118:449

103.225.138.94:449

142.202.191.164:443

95.210.118.90:449

36.94.62.207:443

201.20.118.122:449

180.92.238.186:449

103.130.6.244:449

202.91.41.138:449

Attributes

autorun
Name:pwgrab

ecc_pubkey.base64

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4468	4688	rundll32.exe	EXCEL.EXE

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

Templ.dll packer 3 IoCs

Detects Templ.dll packer which usually loads Trickbot.

Processes:

resource	yara_rule
behavioral2/memory/4488-11-0x0000000004730000-0x0000000004769000-memory.dmp	templ_dll
behavioral2/memory/4488-12-0x00000000049E0000-0x0000000004A17000-memory.dmp	templ_dll
behavioral2/memory/4488-13-0x00000000046E0000-0x0000000004716000-memory.dmp	templ_dll

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4488 rundll32.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

43 ip.anysrc.net

pid	process
4488	rundll32.exe

flow	ioc
43	ip.anysrc.net

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

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

4688 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

wermgr.exe

description pid process

Token: SeDebugPrivilege 840 wermgr.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4688 EXCEL.EXE
4688 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	840	wermgr.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE
4688	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 4688 wrote to memory of 4468	4688	EXCEL.EXE	rundll32.exe
PID 4688 wrote to memory of 4468	4688	EXCEL.EXE	rundll32.exe
PID 4468 wrote to memory of 4488	4468	rundll32.exe	rundll32.exe
PID 4468 wrote to memory of 4488	4468	rundll32.exe	rundll32.exe
PID 4468 wrote to memory of 4488	4468	rundll32.exe	rundll32.exe
PID 4488 wrote to memory of 640	4488	rundll32.exe	wermgr.exe
PID 4488 wrote to memory of 640	4488	rundll32.exe	wermgr.exe
PID 4488 wrote to memory of 840	4488	rundll32.exe	wermgr.exe
PID 4488 wrote to memory of 840	4488	rundll32.exe	wermgr.exe
PID 4488 wrote to memory of 840	4488	rundll32.exe	wermgr.exe
PID 4488 wrote to memory of 840	4488	rundll32.exe	wermgr.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Attachment_777622.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4688

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\qoqw\1554.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4468

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\qoqw\1554.dll,DllRegisterServer
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4488

C:\Windows\system32\wermgr.exe
C:\Windows\system32\wermgr.exe
4⤵
PID:640

C:\Windows\system32\wermgr.exe
C:\Windows\system32\wermgr.exe
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\qoqw\1554.dll
MD5
10dcb25376d06bc580d053b982f2d9a3

SHA1
a05fcb08123e2ce5385081ce5b57e6dd211b9c3c

SHA256
07048e9764891e39f3e37c72c8ca33a6a01cbd359cd47c12a3af7726769e83b8

SHA512
d377b20f6d6ef9133694e2f776a117307dace1756c00634871f8aac7ab586cd2da982c01715b41b0a4d2a40b6ec621b8f1f4db77fad5df104f1d3de074eb1381

Download Submit
\ProgramData\qoqw\1554.dll
MD5
10dcb25376d06bc580d053b982f2d9a3

SHA1
a05fcb08123e2ce5385081ce5b57e6dd211b9c3c

SHA256
07048e9764891e39f3e37c72c8ca33a6a01cbd359cd47c12a3af7726769e83b8

SHA512
d377b20f6d6ef9133694e2f776a117307dace1756c00634871f8aac7ab586cd2da982c01715b41b0a4d2a40b6ec621b8f1f4db77fad5df104f1d3de074eb1381

Download Submit
memory/840-19-0x000002339C600000-0x000002339C601000-memory.dmp

Filesize
4KB

Download
memory/840-18-0x000002339C4E0000-0x000002339C508000-memory.dmp

Filesize
160KB

Download
memory/840-15-0x0000000000000000-mapping.dmp

Download
memory/4468-7-0x0000000000000000-mapping.dmp

Download
memory/4488-13-0x00000000046E0000-0x0000000004716000-memory.dmp

Filesize
216KB

Download
memory/4488-9-0x0000000000000000-mapping.dmp

Download
memory/4488-11-0x0000000004730000-0x0000000004769000-memory.dmp

Filesize
228KB

Download
memory/4488-12-0x00000000049E0000-0x0000000004A17000-memory.dmp

Filesize
220KB

Download
memory/4488-14-0x0000000004DA0000-0x0000000004DE3000-memory.dmp

Filesize
268KB

Download
memory/4488-17-0x0000000004A21000-0x0000000004A23000-memory.dmp

Filesize
8KB

Download
memory/4488-16-0x0000000004A40000-0x0000000004A41000-memory.dmp

Filesize
4KB

Download
memory/4688-6-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4688-2-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4688-5-0x00007FFEEABA0000-0x00007FFEEB1D7000-memory.dmp

Filesize
6.2MB

Download
memory/4688-4-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4688-3-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads