trickbot | 0bc8e87eac781658b2c369eceef385c1190055452610848e5e003716464a27f7

General

Target

Documents_66157387_188378863.xls
Size

276KB
MD5

f18b3516539d279662cfe7a779458716
SHA1

c272a9fdc279634826f3cd6bbfaae3fef02782fe
SHA256

0bc8e87eac781658b2c369eceef385c1190055452610848e5e003716464a27f7
SHA512

d78db59ce81bc76e56ea55c66a7510f0ab0e3c15dc40e00622727fba54c349348602c427ae5998caf55528a20a3a6c7c1c835909cb66c271033536e7f5a358cf

Score

10^/10

trickbot che3 banker trojan

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://www.ottenbourg.com/chester.dll

Extracted

Family

trickbot

Version

2000029

Botnet

che3

C2

103.66.72.217:443

117.252.68.211:443

103.124.173.35:443

115.73.211.230:443

117.54.250.246:443

131.0.112.122:443

102.176.221.78:443

181.176.161.143:443

154.79.251.172:443

103.111.199.76:443

103.54.41.193:443

154.79.244.182:443

154.79.245.158:443

139.255.116.42:443

178.254.161.250:443

178.134.47.166:443

158.181.179.229:443

103.90.197.33:443

109.207.165.40:443

178.72.192.20:443

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1552	1988	rundll32.exe	EXCEL.EXE

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

Templ.dll packer 1 IoCs

Detects Templ.dll packer which usually loads Trickbot.

Processes:

resource	yara_rule
behavioral1/memory/1552-66-0x0000000000A80000-0x0000000000CA6000-memory.dmp	templ_dll

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1552 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

20 wtfismyip.com
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

pid	process
1552	rundll32.exe

flow	ioc
20	wtfismyip.com

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1988 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

wermgr.exe

description pid process

Token: SeDebugPrivilege 800 wermgr.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1988 EXCEL.EXE
1988 EXCEL.EXE
1988 EXCEL.EXE

pid	process
1988	EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	800	wermgr.exe

pid	process
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

EXCEL.EXErundll32.exe

description	pid	process	target process
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1988 wrote to memory of 1552	1988	EXCEL.EXE	rundll32.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe
PID 1552 wrote to memory of 800	1552	rundll32.exe	wermgr.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\Documents_66157387_188378863.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\osnspmdf.dpa,StartW
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1552

C:\Windows\system32\wermgr.exe
C:\Windows\system32\wermgr.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
MD5
f210439458fe6011a4cd883810414b0b

SHA1
d644f8160b0209141ac7c582e2ebca96f12306e1

SHA256
4b7f8b6c7413437ec92d2344ffa4aa3eda96515e098cfe0b387a26fb5d7f65bc

SHA512
e825e67c2639e6b0e67a702d0b1118f1aac3949b3cc5199e91b94015df2c285af99548e1a919f915df1c253f97e45db5e90a03adb11d44439619310b46643d84

Download Submit
C:\Users\Admin\osnspmdf.dpa
MD5
ac2b2336004ae55d79e225ae4634b9ca

SHA1
a2399efd6b0c947820433f5b48542b61ce16f485

SHA256
e2bba9e894cef89fd6b12d8c2bf19a139e0fd6a3e91684385f84866a6a10d5d8

SHA512
188fe4701944f27464fe67b97552d35078f1d9fdd6478950ce21beb0dcae6938a79cf7bf7aa2068bb1576e1070e9f375cb61f9bb918b3dfa76d79ac18703f98c

Download Submit
\Users\Admin\osnspmdf.dpa
MD5
ac2b2336004ae55d79e225ae4634b9ca

SHA1
a2399efd6b0c947820433f5b48542b61ce16f485

SHA256
e2bba9e894cef89fd6b12d8c2bf19a139e0fd6a3e91684385f84866a6a10d5d8

SHA512
188fe4701944f27464fe67b97552d35078f1d9fdd6478950ce21beb0dcae6938a79cf7bf7aa2068bb1576e1070e9f375cb61f9bb918b3dfa76d79ac18703f98c

Download Submit
memory/800-72-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/800-71-0x00000000000F0000-0x0000000000118000-memory.dmp

Filesize
160KB

Download
memory/800-67-0x0000000000000000-mapping.dmp

Download
memory/1552-62-0x0000000000000000-mapping.dmp

Download
memory/1552-66-0x0000000000A80000-0x0000000000CA6000-memory.dmp

Filesize
2.1MB

Download
memory/1552-63-0x0000000075B31000-0x0000000075B33000-memory.dmp

Filesize
8KB

Download
memory/1552-69-0x00000000001F0000-0x0000000000201000-memory.dmp

Filesize
68KB

Download
memory/1552-68-0x0000000000770000-0x00000000007B3000-memory.dmp

Filesize
268KB

Download
memory/1552-70-0x0000000010001000-0x0000000010003000-memory.dmp

Filesize
8KB

Download
memory/1988-59-0x000000002F681000-0x000000002F684000-memory.dmp

Filesize
12KB

Download
memory/1988-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1988-60-0x0000000071B91000-0x0000000071B93000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads