formbook | a5e9691e534dca4edb6c0a0e86690541c9ec6f4f17bb4b0114c4045bc2e0b79b

General

Target

pos.exe
Size

454KB
MD5

0082bb1c3ac5dc499f6db3d45de0ab3e
SHA1

90eb55324f4068a4fde1da25ca7a3eff65d17e1e
SHA256

1bb913d6f594107a8c8d4d64f9a3de85c602813d9ad93189b9949fbc8a93aa32
SHA512

e42c5af62527c2193d3f49f93918535b656f9d0a34065657df8273e606405b551e9f939450a134c20c58429951fbe7a27c14e19e66eeee57446349eaf7e30384

Score

10^/10

formbook u1bs rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u1bs

C2

http://www.vgmpradio.com/u1bs/

Decoy

ln-safe-keepingmisva4.xyz

rtfh.xyz

awolin.link

metadlf.com

cardboardcasual.com

psicoterapiahablada.com

spaminator.xyz

hnjqzl.top

dentalyinovasi.site

biosynblas.com

zvyk.store

shreevishwakarmaservices.com

showersplash.com

norbert-roth.com

londoncapitaltraders.com

istanbuldonerkebabheroncity.com

realdiscountsnow.com

marlinplumbingwnc.com

magazinadziavane.com

qantv.com

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/1820-64-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1820-65-0x000000000041F130-mapping.dmp	formbook
behavioral1/memory/960-73-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1060 cmd.exe

pid	process
1060	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

pos.exepos.exehelp.exe

description	pid	process	target process
PID 1240 set thread context of 1820	1240	pos.exe	pos.exe
PID 1820 set thread context of 1268	1820	pos.exe	Explorer.EXE
PID 960 set thread context of 1268	960	help.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

900 schtasks.exe

pid	process
900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

pos.exepos.exehelp.exe

pid	process
1240	pos.exe
1820	pos.exe
1820	pos.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe
960	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

pos.exehelp.exe

pid process

1820 pos.exe
1820 pos.exe
1820 pos.exe
960 help.exe
960 help.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

pos.exepos.exehelp.exe

description pid process

Token: SeDebugPrivilege 1240 pos.exe
Token: SeDebugPrivilege 1820 pos.exe
Token: SeDebugPrivilege 960 help.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

pid	process
1820	pos.exe
1820	pos.exe
1820	pos.exe
960	help.exe
960	help.exe

description	pid	process
Token: SeDebugPrivilege	1240	pos.exe
Token: SeDebugPrivilege	1820	pos.exe
Token: SeDebugPrivilege	960	help.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

pos.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 1240 wrote to memory of 900	1240	pos.exe	schtasks.exe
PID 1240 wrote to memory of 900	1240	pos.exe	schtasks.exe
PID 1240 wrote to memory of 900	1240	pos.exe	schtasks.exe
PID 1240 wrote to memory of 900	1240	pos.exe	schtasks.exe
PID 1240 wrote to memory of 340	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 340	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 340	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 340	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1240 wrote to memory of 1820	1240	pos.exe	pos.exe
PID 1268 wrote to memory of 960	1268	Explorer.EXE	help.exe
PID 1268 wrote to memory of 960	1268	Explorer.EXE	help.exe
PID 1268 wrote to memory of 960	1268	Explorer.EXE	help.exe
PID 1268 wrote to memory of 960	1268	Explorer.EXE	help.exe
PID 960 wrote to memory of 1060	960	help.exe	cmd.exe
PID 960 wrote to memory of 1060	960	help.exe	cmd.exe
PID 960 wrote to memory of 1060	960	help.exe	cmd.exe
PID 960 wrote to memory of 1060	960	help.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\pos.exe
"C:\Users\Admin\AppData\Local\Temp\pos.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YAeSiES" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9702.tmp"
3⤵
- Creates scheduled task(s)
PID:900

C:\Users\Admin\AppData\Local\Temp\pos.exe
"C:\Users\Admin\AppData\Local\Temp\pos.exe"
3⤵
PID:340

C:\Users\Admin\AppData\Local\Temp\pos.exe
"C:\Users\Admin\AppData\Local\Temp\pos.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1820

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\pos.exe"
3⤵
- Deletes itself
PID:1060

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/900-61-0x0000000000000000-mapping.dmp

Download
memory/960-73-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/960-75-0x0000000000480000-0x0000000000513000-memory.dmp

Filesize
588KB

Download
memory/960-72-0x0000000000190000-0x0000000000196000-memory.dmp

Filesize
24KB

Download
memory/960-74-0x00000000007C0000-0x0000000000AC3000-memory.dmp

Filesize
3.0MB

Download
memory/960-70-0x0000000000000000-mapping.dmp

Download
memory/1060-71-0x0000000000000000-mapping.dmp

Download
memory/1240-60-0x0000000004EA0000-0x0000000004EF0000-memory.dmp

Filesize
320KB

Download
memory/1240-59-0x00000000003B0000-0x00000000003B7000-memory.dmp

Filesize
28KB

Download
memory/1240-57-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1240-58-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download
memory/1240-55-0x0000000001080000-0x0000000001081000-memory.dmp

Filesize
4KB

Download
memory/1268-69-0x0000000005ED0000-0x0000000005FED000-memory.dmp

Filesize
1.1MB

Download
memory/1268-76-0x00000000067F0000-0x000000000693A000-memory.dmp

Filesize
1.3MB

Download
memory/1820-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-68-0x0000000000140000-0x0000000000154000-memory.dmp

Filesize
80KB

Download
memory/1820-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-65-0x000000000041F130-mapping.dmp

Download
memory/1820-67-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads