trickbot | 2e0487c6cbecd68c83166ebf8742f9784be52dba4d77d37a359bacb33790cb76

General

Target

Form_1099_5715537.xls
Size

90KB
MD5

d1bda4049e740009dff39fe1698cb00a
SHA1

efc17b6d5cdd51832d90a71b7cfdea7248473d44
SHA256

2e0487c6cbecd68c83166ebf8742f9784be52dba4d77d37a359bacb33790cb76
SHA512

af682858aea2df8b9a94f97d630a4702c4c3fdb0e688f438b6495408efea3a352b6fc01427d27d17a0fe9f85c028f8ae6fa2a3653c63670c18f0ef865838db54

Score

10^/10

spyware trojan banker trickbot

Malware Config

Extracted

Family

trickbot

Version

1000512

Botnet

chil61

C2

95.171.16.42:443

185.90.61.9:443

5.1.81.68:443

185.99.2.65:443

134.119.191.11:443

85.204.116.100:443

78.108.216.47:443

51.81.112.144:443

194.5.250.121:443

185.14.31.104:443

185.99.2.66:443

107.175.72.141:443

192.3.247.123:443

134.119.191.21:443

85.204.116.216:443

91.235.129.20:443

181.129.104.139:449

181.112.157.42:449

181.129.134.18:449

131.161.253.190:449

Attributes

autorun
Name:pwgrab

ecc_pubkey.base64

Signatures

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Trickbot
Developed in 2016, TrickBot is one of the more recent banking Trojans.
trojan banker trickbot
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3556 rundll32.exe

pid	process
3556	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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 3848 wrote to memory of 3496	3848	EXCEL.EXE	rundll32.exe
PID 3848 wrote to memory of 3496	3848	EXCEL.EXE	rundll32.exe
PID 3496 wrote to memory of 3556	3496	rundll32.exe	rundll32.exe
PID 3496 wrote to memory of 3556	3496	rundll32.exe	rundll32.exe
PID 3496 wrote to memory of 3556	3496	rundll32.exe	rundll32.exe
PID 3556 wrote to memory of 3036	3556	rundll32.exe	wermgr.exe
PID 3556 wrote to memory of 3036	3556	rundll32.exe	wermgr.exe
PID 3556 wrote to memory of 3036	3556	rundll32.exe	wermgr.exe
PID 3556 wrote to memory of 3036	3556	rundll32.exe	wermgr.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

wermgr.exe

description pid process

Token: SeDebugPrivilege 3036 wermgr.exe
Token: SeDebugPrivilege 3036 wermgr.exe
Token: SeDebugPrivilege 3036 wermgr.exe

description	pid	process
Token: SeDebugPrivilege	3036	wermgr.exe
Token: SeDebugPrivilege	3036	wermgr.exe
Token: SeDebugPrivilege	3036	wermgr.exe

Templ.dll packer 2 IoCs

Detects Templ.dll packer which usually loads Trickbot.

Processes:

resource	yara_rule
behavioral2/memory/3556-4-0x0000000004C10000-0x0000000004C3E000-memory.dmp	templ_dll
behavioral2/memory/3556-5-0x0000000010000000-0x000000001002D000-memory.dmp	templ_dll

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE
3848	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3848 EXCEL.EXE

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	3496	3848	rundll32.exe	EXCEL.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\Form_1099_5715537.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:3848

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\CMgthTu\RQrZqdh\RCjlGin.dll,DllRegisterServer
2⤵
- Suspicious use of WriteProcessMemory
- Process spawned unexpected child process
PID:3496

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\CMgthTu\RQrZqdh\RCjlGin.dll,DllRegisterServer
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3556

C:\Windows\system32\wermgr.exe
C:\Windows\system32\wermgr.exe
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\CMgthTu\RQrZqdh\RCjlGin.dll

Download Submit
\CMgthTu\RQrZqdh\RCjlGin.dll

Download Submit
memory/3036-6-0x0000000000000000-mapping.dmp

Download
memory/3496-0-0x0000000000000000-mapping.dmp

Download
memory/3556-2-0x0000000000000000-mapping.dmp

Download
memory/3556-4-0x0000000004C10000-0x0000000004C3E000-memory.dmp

Filesize
184KB

Download
memory/3556-5-0x0000000010000000-0x000000001002D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads