trickbot | 438fc9f6931a33ae2ac94848f8b2c3876b3ddf4e4d58c5ed403ca49da3366a34

General

Target

case_142297110_1765967889.xlsm
Size

149KB
MD5

cb9f4477fbf6f33c8de41d3a2febcf0f
SHA1

97d398eed15462aeeaff7a7b9ef93a61fdf6370d
SHA256

438fc9f6931a33ae2ac94848f8b2c3876b3ddf4e4d58c5ed403ca49da3366a34
SHA512

b6517693a5a17270ca180c6ec0e6edea0629dbed28a69499247f0dbd2993344417d1f868afbbd8b9fdee21b6321a5ba57a31c95f5d1fc06ff13c1302f53d6969

Score

10^/10

trickbot rob77 banker trojan

Malware Config

Extracted

Family

trickbot

Version

100013

Botnet

rob77

C2

103.225.138.94:449

122.2.28.70:449

123.200.26.246:449

131.255.106.152:449

142.112.79.223:449

154.126.176.30:449

180.92.238.186:449

187.20.217.129:449

201.20.118.122:449

202.91.41.138:449

95.210.118.90:449

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	4160	4644	rundll32.exe	EXCEL.EXE

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

4164 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

47 ipinfo.io

pid	process
4164	rundll32.exe

flow	ioc
47	ipinfo.io

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 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

4644 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

wermgr.exe

description pid process

Token: SeDebugPrivilege 3932 wermgr.exe

description	pid	process
Token: SeDebugPrivilege	3932	wermgr.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE
4644	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 4644 wrote to memory of 4160	4644	EXCEL.EXE	rundll32.exe
PID 4644 wrote to memory of 4160	4644	EXCEL.EXE	rundll32.exe
PID 4160 wrote to memory of 4164	4160	rundll32.exe	rundll32.exe
PID 4160 wrote to memory of 4164	4160	rundll32.exe	rundll32.exe
PID 4160 wrote to memory of 4164	4160	rundll32.exe	rundll32.exe
PID 4164 wrote to memory of 4084	4164	rundll32.exe	cmd.exe
PID 4164 wrote to memory of 4084	4164	rundll32.exe	cmd.exe
PID 4164 wrote to memory of 4084	4164	rundll32.exe	cmd.exe
PID 4164 wrote to memory of 3932	4164	rundll32.exe	wermgr.exe
PID 4164 wrote to memory of 3932	4164	rundll32.exe	wermgr.exe
PID 4164 wrote to memory of 3932	4164	rundll32.exe	wermgr.exe
PID 4164 wrote to memory of 3932	4164	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\case_142297110_1765967889.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4644

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Krock.KOD,StartW
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4160

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Krock.KOD,StartW
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4164

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe
4⤵
PID:4084

C:\Windows\system32\wermgr.exe
C:\Windows\system32\wermgr.exe
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Krock.KOD
MD5
8c035dd8f10db30c83018d3e874358c7

SHA1
7ac9fcd5225fe70fdb342584cff6728277c53379

SHA256
7dce28062f5bccd0b1de6035eeb9a332d925f1f4348846b6ad17e91e4d458ec7

SHA512
afe80eb15a570d8700e896b6c632e9a93548cc66315d171603eca4e4fd898fd14e834e278c150fbba29140cb6adde3676dcb3d3911d9b54b5936e25aca7a2656

Download Submit
\Users\Admin\Krock.KOD
MD5
8c035dd8f10db30c83018d3e874358c7

SHA1
7ac9fcd5225fe70fdb342584cff6728277c53379

SHA256
7dce28062f5bccd0b1de6035eeb9a332d925f1f4348846b6ad17e91e4d458ec7

SHA512
afe80eb15a570d8700e896b6c632e9a93548cc66315d171603eca4e4fd898fd14e834e278c150fbba29140cb6adde3676dcb3d3911d9b54b5936e25aca7a2656

Download Submit
memory/3932-15-0x000001F4B62B0000-0x000001F4B62D8000-memory.dmp

Filesize
160KB

Download
memory/3932-16-0x000001F4B63C0000-0x000001F4B63C1000-memory.dmp

Filesize
4KB

Download
memory/3932-12-0x0000000000000000-mapping.dmp

Download
memory/4160-7-0x0000000000000000-mapping.dmp

Download
memory/4164-11-0x0000000000790000-0x00000000007C4000-memory.dmp

Filesize
208KB

Download
memory/4164-9-0x0000000000000000-mapping.dmp

Download
memory/4164-14-0x0000000010001000-0x0000000010003000-memory.dmp

Filesize
8KB

Download
memory/4164-13-0x00000000007F0000-0x00000000007F1000-memory.dmp

Filesize
4KB

Download
memory/4644-6-0x00007FF9A2350000-0x00007FF9A2360000-memory.dmp

Filesize
64KB

Download
memory/4644-2-0x00007FF9A2350000-0x00007FF9A2360000-memory.dmp

Filesize
64KB

Download
memory/4644-5-0x00007FF9C90D0000-0x00007FF9C9707000-memory.dmp

Filesize
6.2MB

Download
memory/4644-4-0x00007FF9A2350000-0x00007FF9A2360000-memory.dmp

Filesize
64KB

Download
memory/4644-3-0x00007FF9A2350000-0x00007FF9A2360000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads