formbook | 63abc500d2a9f12692276d1cd2becc0ce16719ab69a69ea9827bd411f12b4291

Analysis

max time kernel
151s
max time network
137s
platform
windows7_x64
resource
win7v20210410
submitted
06-05-2021 22:02

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General

Target

PO.exe
Size

228KB
MD5

2593eef7b38e160b9697f2479fa8843f
SHA1

25d4d88f321321fb5b2b316fd5dbcd5bb144daa1
SHA256

b35de004189f271fe754dd614e5fbbc299425f5aca9ebf1f935bf26696964853
SHA512

c5beb57aae9c18ca5d7d73954216abc6a07871666d08a654d7b5d8e1d25b0defe9ca66eee77325bed03870a39757c85df13f868472447369bd2903ba05336a21

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

http://www.knighttechinca.com/dxe/

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

Signatures

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral9/memory/1176-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral9/memory/1444-71-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1552 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

PO.exe

pid process

1096 PO.exe

pid	process
1552	cmd.exe

pid	process
1096	PO.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO.exePO.exewlanext.exe

description	pid	process	target process
PID 1096 set thread context of 1176	1096	PO.exe	PO.exe
PID 1176 set thread context of 1240	1176	PO.exe	Explorer.EXE
PID 1444 set thread context of 1240	1444	wlanext.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: EnumeratesProcesses 31 IoCs

Processes:

PO.exewlanext.exe

pid	process
1176	PO.exe
1176	PO.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe
1444	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

PO.exePO.exewlanext.exe

pid process

1096 PO.exe
1176 PO.exe
1176 PO.exe
1176 PO.exe
1444 wlanext.exe
1444 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1176 PO.exe
Token: SeDebugPrivilege 1444 wlanext.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
1240 Explorer.EXE
1240 Explorer.EXE
1240 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
1240 Explorer.EXE
1240 Explorer.EXE
1240 Explorer.EXE

pid	process
1240	Explorer.EXE

pid	process
1096	PO.exe
1176	PO.exe
1176	PO.exe
1176	PO.exe
1444	wlanext.exe
1444	wlanext.exe

description	pid	process
Token: SeDebugPrivilege	1176	PO.exe
Token: SeDebugPrivilege	1444	wlanext.exe

pid	process
1240	Explorer.EXE
1240	Explorer.EXE
1240	Explorer.EXE
1240	Explorer.EXE

pid	process
1240	Explorer.EXE
1240	Explorer.EXE
1240	Explorer.EXE
1240	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

PO.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1096 wrote to memory of 1176	1096	PO.exe	PO.exe
PID 1096 wrote to memory of 1176	1096	PO.exe	PO.exe
PID 1096 wrote to memory of 1176	1096	PO.exe	PO.exe
PID 1096 wrote to memory of 1176	1096	PO.exe	PO.exe
PID 1096 wrote to memory of 1176	1096	PO.exe	PO.exe
PID 1240 wrote to memory of 1444	1240	Explorer.EXE	wlanext.exe
PID 1240 wrote to memory of 1444	1240	Explorer.EXE	wlanext.exe
PID 1240 wrote to memory of 1444	1240	Explorer.EXE	wlanext.exe
PID 1240 wrote to memory of 1444	1240	Explorer.EXE	wlanext.exe
PID 1444 wrote to memory of 1552	1444	wlanext.exe	cmd.exe
PID 1444 wrote to memory of 1552	1444	wlanext.exe	cmd.exe
PID 1444 wrote to memory of 1552	1444	wlanext.exe	cmd.exe
PID 1444 wrote to memory of 1552	1444	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1240

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1096

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1176

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1444

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"
3⤵
- Deletes itself
PID:1552

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsi1D72.tmp\k5ig8v1xqqd111h.dll
MD5
fe9e8afe6e228256eaf3065c403d87bb

SHA1
1d46976328242b9e4f37d994bc1f169ee1f4c112

SHA256
e2b161127954eb1373158a95ef083d1b00198fef933e9ad5a1496d82d9006b8b

SHA512
573399e2885f89f05e27de783ef286c79dab04ca4e942f62ccbbb40d61fc7ab80baa97b13948b719dcae785d5daa19e4aa23adb4922e9737e0ecbfc2a09ba4a5

Download Submit
memory/1096-63-0x0000000000380000-0x0000000000382000-memory.dmp

Filesize
8KB

Download
memory/1096-60-0x0000000076E11000-0x0000000076E13000-memory.dmp

Filesize
8KB

Download
memory/1176-65-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Filesize
3.0MB

Download
memory/1176-62-0x000000000041EAF0-mapping.dmp

Download
memory/1176-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1176-66-0x0000000000340000-0x0000000000354000-memory.dmp

Filesize
80KB

Download
memory/1240-67-0x0000000006FC0000-0x0000000007115000-memory.dmp

Filesize
1.3MB

Download
memory/1240-74-0x0000000007F90000-0x00000000080E6000-memory.dmp

Filesize
1.3MB

Download
memory/1444-68-0x0000000000000000-mapping.dmp

Download
memory/1444-70-0x00000000008C0000-0x00000000008D6000-memory.dmp

Filesize
88KB

Download
memory/1444-71-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1444-72-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/1444-73-0x0000000001D80000-0x0000000001E13000-memory.dmp

Filesize
588KB

Download
memory/1552-69-0x0000000000000000-mapping.dmp

Download