formbook | 5d429d5b5040db22296b658ddf87b4ee8a5dd7ba5e780453c2336dd13555e4bf

General

Target

shipping docs.exe
Size

608KB
MD5

b2746eceecc59cdef8881c91a88550f4
SHA1

63011e47cee50731bbd9b3cc8a15dbb6b9f8fad7
SHA256

5d429d5b5040db22296b658ddf87b4ee8a5dd7ba5e780453c2336dd13555e4bf
SHA512

8855654ba48a0fd8220adaffe97d636652fdd480aed3d12da4884f9b277ab53924dd290e71fba1fb33ff6635e2656d50660479ab4491adb4dbafc482655da922

Score

10^/10

formbook xloader a8hq loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

a8hq

Decoy

veteransductcleaning.com

beajtjunkies.com

houseofascofi.com

scottsdalemediator.com

atelyadesign.com

profitcase.pro

imtokenio.club

qinglingpai.com

bigsmile-meal.net

daytonlivestream.com

aspiradores10.online

ytybs120.com

hdatelier.com

bearpierce.com

yeson28ca.com

booklearner.com

m8j9.club

mmophamthinhlegend.space

hq4a7o6zb.com

sophiadaki.online

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1716-62-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1716-63-0x000000000041F2C0-mapping.dmp	xloader
behavioral1/memory/1716-65-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1400-72-0x0000000000090000-0x00000000000BB000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

280 cmd.exe

pid	process
280	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wuapp.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DBFPEZIXW82L = "C:\\Program Files (x86)\\Thjg4l6x\\audiodgylu8.exe"	wuapp.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wuapp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

shipping docs.exeshipping docs.exewuapp.exe

description	pid	process	target process
PID 1992 set thread context of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1716 set thread context of 1288	1716	shipping docs.exe	Explorer.EXE
PID 1400 set thread context of 1288	1400	wuapp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wuapp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Thjg4l6x\audiodgylu8.exe wuapp.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Thjg4l6x\audiodgylu8.exe	wuapp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wuapp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wuapp.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

shipping docs.exewuapp.exe

pid	process
1716	shipping docs.exe
1716	shipping docs.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe
1400	wuapp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

shipping docs.exewuapp.exe

pid process

1716 shipping docs.exe
1716 shipping docs.exe
1716 shipping docs.exe
1400 wuapp.exe
1400 wuapp.exe
1400 wuapp.exe
1400 wuapp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shipping docs.exewuapp.exe

description pid process

Token: SeDebugPrivilege 1716 shipping docs.exe
Token: SeDebugPrivilege 1400 wuapp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1288 Explorer.EXE
1288 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1288 Explorer.EXE
1288 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1716	shipping docs.exe
Token: SeDebugPrivilege	1400	wuapp.exe

pid	process
1288	Explorer.EXE
1288	Explorer.EXE

pid	process
1288	Explorer.EXE
1288	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

shipping docs.exeExplorer.EXEwuapp.exe

description	pid	process	target process
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1992 wrote to memory of 1716	1992	shipping docs.exe	shipping docs.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1288 wrote to memory of 1400	1288	Explorer.EXE	wuapp.exe
PID 1400 wrote to memory of 280	1400	wuapp.exe	cmd.exe
PID 1400 wrote to memory of 280	1400	wuapp.exe	cmd.exe
PID 1400 wrote to memory of 280	1400	wuapp.exe	cmd.exe
PID 1400 wrote to memory of 280	1400	wuapp.exe	cmd.exe
PID 1400 wrote to memory of 1896	1400	wuapp.exe	Firefox.exe
PID 1400 wrote to memory of 1896	1400	wuapp.exe	Firefox.exe
PID 1400 wrote to memory of 1896	1400	wuapp.exe	Firefox.exe
PID 1400 wrote to memory of 1896	1400	wuapp.exe	Firefox.exe
PID 1400 wrote to memory of 1896	1400	wuapp.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1288

C:\Users\Admin\AppData\Local\Temp\shipping docs.exe
"C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1992

C:\Users\Admin\AppData\Local\Temp\shipping docs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1716

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1400

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"
3⤵
- Deletes itself
PID:280

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1896

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/280-70-0x0000000000000000-mapping.dmp

Download
memory/1288-68-0x0000000004F40000-0x000000000508A000-memory.dmp

Filesize
1.3MB

Download
memory/1288-75-0x00000000068F0000-0x00000000069FE000-memory.dmp

Filesize
1.1MB

Download
memory/1400-74-0x00000000008B0000-0x0000000000940000-memory.dmp

Filesize
576KB

Download
memory/1400-73-0x0000000000AF0000-0x0000000000DF3000-memory.dmp

Filesize
3.0MB

Download
memory/1400-72-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/1400-71-0x0000000001020000-0x000000000102B000-memory.dmp

Filesize
44KB

Download
memory/1400-69-0x0000000000000000-mapping.dmp

Download
memory/1716-59-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1716-65-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1716-66-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/1716-67-0x00000000005D0000-0x00000000005E1000-memory.dmp

Filesize
68KB

Download
memory/1716-63-0x000000000041F2C0-mapping.dmp

Download
memory/1716-62-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1716-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1992-54-0x0000000001270000-0x000000000130E000-memory.dmp

Filesize
632KB

Download
memory/1992-58-0x00000000006D0000-0x0000000000702000-memory.dmp

Filesize
200KB

Download
memory/1992-57-0x0000000005CF0000-0x0000000005D74000-memory.dmp

Filesize
528KB

Download
memory/1992-56-0x0000000000330000-0x000000000033A000-memory.dmp

Filesize
40KB

Download
memory/1992-55-0x0000000074E91000-0x0000000074E93000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads