formbook | e446bd97230671b6e38682ec9f3da7527c18dbd555efc7f27a52d144cf54edcc

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7v20201028
submitted
18-11-2020 16:58

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General

Target

1.bin/1.bin.exe

Score

10^/10

formbook persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.0

http://www.worstig.com/w9z/

Decoy

crazzysex.com

hanferd.com

gteesrd.com

bayfrontbabyplace.com

jicuiquan.net

relationshiplink.net

ohchacyberphoto.com

kauegimenes.com

powerful-seldom.com

ketotoken.com

make-money-online-success.com

redgoldcollection.com

hannan-football.com

hamptondc.com

vllii.com

aa8520.com

platform35markethall.com

larozeimmo.com

oligopoly.net

llhak.info

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1764-14-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1764-15-0x000000000041E2D0-mapping.dmp	formbook
behavioral1/memory/1784-18-0x0000000000000000-mapping.dmp	formbook

Executes dropped EXE 3 IoCs

Processes:

2.exe3.exe2.exe

pid process

1168 2.exe
1972 3.exe
1764 2.exe

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

3.exe3.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	3.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	3.exe

Loads dropped DLL 3 IoCs

Processes:

2.exe3.exe3.exe

pid process

1168 2.exe
1972 3.exe
1260 3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Dokumen4 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Dibromob\\PRECONCE.vbs"	3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

3.exe3.exe

pid process

1972 3.exe
1260 3.exe

pid	process
1972	3.exe
1260	3.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

2.exe2.exe3.exeraserver.exe

description	pid	process	target process
PID 1168 set thread context of 1764	1168	2.exe	2.exe
PID 1764 set thread context of 1200	1764	2.exe	Explorer.EXE
PID 1972 set thread context of 1260	1972	3.exe	3.exe
PID 1784 set thread context of 1200	1784	raserver.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: CmdExeWriteProcessMemorySpam 2 IoCs

Processes:

2.exe3.exe

pid process

1168 2.exe
1972 3.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

2.exe2.exeraserver.exe

pid	process
1168	2.exe
1764	2.exe
1764	2.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe
1784	raserver.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

2.exe2.exeraserver.exe3.exe

pid process

1168 2.exe
1764 2.exe
1764 2.exe
1764 2.exe
1784 raserver.exe
1972 3.exe
1784 raserver.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2.exeraserver.exe

description pid process

Token: SeDebugPrivilege 1764 2.exe
Token: SeDebugPrivilege 1784 raserver.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

3.exe

pid process

1972 3.exe

description	pid	process
Token: SeDebugPrivilege	1764	2.exe
Token: SeDebugPrivilege	1784	raserver.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1972	3.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

1.bin.execmd.exe2.exeExplorer.EXEraserver.exe3.exe

description	pid	process	target process
PID 328 wrote to memory of 1812	328	1.bin.exe	cmd.exe
PID 328 wrote to memory of 1812	328	1.bin.exe	cmd.exe
PID 328 wrote to memory of 1812	328	1.bin.exe	cmd.exe
PID 328 wrote to memory of 1812	328	1.bin.exe	cmd.exe
PID 1812 wrote to memory of 2004	1812	cmd.exe	javaw.exe
PID 1812 wrote to memory of 2004	1812	cmd.exe	javaw.exe
PID 1812 wrote to memory of 2004	1812	cmd.exe	javaw.exe
PID 1812 wrote to memory of 1168	1812	cmd.exe	2.exe
PID 1812 wrote to memory of 1168	1812	cmd.exe	2.exe
PID 1812 wrote to memory of 1168	1812	cmd.exe	2.exe
PID 1812 wrote to memory of 1168	1812	cmd.exe	2.exe
PID 1812 wrote to memory of 1972	1812	cmd.exe	3.exe
PID 1812 wrote to memory of 1972	1812	cmd.exe	3.exe
PID 1812 wrote to memory of 1972	1812	cmd.exe	3.exe
PID 1812 wrote to memory of 1972	1812	cmd.exe	3.exe
PID 1168 wrote to memory of 1764	1168	2.exe	2.exe
PID 1168 wrote to memory of 1764	1168	2.exe	2.exe
PID 1168 wrote to memory of 1764	1168	2.exe	2.exe
PID 1168 wrote to memory of 1764	1168	2.exe	2.exe
PID 1200 wrote to memory of 1784	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1784	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1784	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1784	1200	Explorer.EXE	raserver.exe
PID 1784 wrote to memory of 1084	1784	raserver.exe	cmd.exe
PID 1784 wrote to memory of 1084	1784	raserver.exe	cmd.exe
PID 1784 wrote to memory of 1084	1784	raserver.exe	cmd.exe
PID 1784 wrote to memory of 1084	1784	raserver.exe	cmd.exe
PID 1972 wrote to memory of 1260	1972	3.exe	3.exe
PID 1972 wrote to memory of 1260	1972	3.exe	3.exe
PID 1972 wrote to memory of 1260	1972	3.exe	3.exe
PID 1972 wrote to memory of 1260	1972	3.exe	3.exe
PID 1972 wrote to memory of 1260	1972	3.exe	3.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1200

C:\Users\Admin\AppData\Local\Temp\1.bin\1.bin.exe
"C:\Users\Admin\AppData\Local\Temp\1.bin\1.bin.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:328

C:\Windows\system32\cmd.exe
"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\6B41.tmp\6B42.tmp\6B43.bat C:\Users\Admin\AppData\Local\Temp\1.bin\1.bin.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:1812

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\1.jar"
4⤵
PID:2004

C:\Users\Admin\AppData\Roaming\2.exe
C:\Users\Admin\AppData\Roaming\2.exe
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1168

C:\Users\Admin\AppData\Roaming\2.exe
C:\Users\Admin\AppData\Roaming\2.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1764

C:\Users\Admin\AppData\Roaming\3.exe
C:\Users\Admin\AppData\Roaming\3.exe
4⤵
- Executes dropped EXE
- Checks QEMU agent file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1972

C:\Users\Admin\AppData\Roaming\3.exe
C:\Users\Admin\AppData\Roaming\3.exe
5⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1260

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\2.exe"
3⤵
PID:1084

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6B41.tmp\6B42.tmp\6B43.bat

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C:\Users\Admin\AppData\Roaming\1.jar

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C:\Users\Admin\AppData\Roaming\2.exe

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C:\Users\Admin\AppData\Roaming\2.exe

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C:\Users\Admin\AppData\Roaming\2.exe

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C:\Users\Admin\AppData\Roaming\3.exe

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C:\Users\Admin\AppData\Roaming\3.exe

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C:\Users\Admin\AppData\Roaming\3.exe

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\Users\Admin\AppData\Roaming\2.exe

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\Users\Admin\AppData\Roaming\3.exe

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memory/1084-21-0x0000000000000000-mapping.dmp

Download
memory/1116-26-0x000007FEF7160000-0x000007FEF73DA000-memory.dmp

Filesize
2.5MB

Download
memory/1168-4-0x0000000000000000-mapping.dmp

Download
memory/1168-5-0x0000000000000000-mapping.dmp

Download
memory/1260-23-0x00000000004015B0-mapping.dmp

Download
memory/1764-14-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

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memory/1764-15-0x000000000041E2D0-mapping.dmp

Download
memory/1784-18-0x0000000000000000-mapping.dmp

Download
memory/1784-19-0x00000000002D0000-0x00000000002EC000-memory.dmp

Filesize
112KB

Download
memory/1784-25-0x0000000003080000-0x0000000003194000-memory.dmp

Filesize
1.1MB

Download
memory/1812-0-0x0000000000000000-mapping.dmp

Download
memory/1972-9-0x0000000000000000-mapping.dmp

Download
memory/1972-8-0x0000000000000000-mapping.dmp

Download
memory/2004-2-0x0000000000000000-mapping.dmp

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