formbook | 63abc500d2a9f12692276d1cd2becc0ce16719ab69a69ea9827bd411f12b4291

Analysis

max time kernel
150s
max time network
147s
platform
windows10_x64
resource
win10v20210408
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
behavioral10/memory/2656-117-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral10/memory/3736-124-0x0000000000480000-0x00000000004AE000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

PO.exe

pid process

3932 PO.exe

pid	process
3932	PO.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO.exePO.exeipconfig.exe

description	pid	process	target process
PID 3932 set thread context of 2656	3932	PO.exe	PO.exe
PID 2656 set thread context of 3000	2656	PO.exe	Explorer.EXE
PID 3736 set thread context of 3000	3736	ipconfig.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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

3736 ipconfig.exe

pid	process
3736	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

PO.exeipconfig.exe

pid	process
2656	PO.exe
2656	PO.exe
2656	PO.exe
2656	PO.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe
3736	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3000 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

PO.exePO.exeipconfig.exe

pid process

3932 PO.exe
2656 PO.exe
2656 PO.exe
2656 PO.exe
3736 ipconfig.exe
3736 ipconfig.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO.exeipconfig.exe

description pid process

Token: SeDebugPrivilege 2656 PO.exe
Token: SeDebugPrivilege 3736 ipconfig.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3000 Explorer.EXE

pid	process
3000	Explorer.EXE

pid	process
3932	PO.exe
2656	PO.exe
2656	PO.exe
2656	PO.exe
3736	ipconfig.exe
3736	ipconfig.exe

description	pid	process
Token: SeDebugPrivilege	2656	PO.exe
Token: SeDebugPrivilege	3736	ipconfig.exe

pid	process
3000	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

PO.exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 3932 wrote to memory of 2656	3932	PO.exe	PO.exe
PID 3932 wrote to memory of 2656	3932	PO.exe	PO.exe
PID 3932 wrote to memory of 2656	3932	PO.exe	PO.exe
PID 3932 wrote to memory of 2656	3932	PO.exe	PO.exe
PID 3000 wrote to memory of 3736	3000	Explorer.EXE	ipconfig.exe
PID 3000 wrote to memory of 3736	3000	Explorer.EXE	ipconfig.exe
PID 3000 wrote to memory of 3736	3000	Explorer.EXE	ipconfig.exe
PID 3736 wrote to memory of 208	3736	ipconfig.exe	cmd.exe
PID 3736 wrote to memory of 208	3736	ipconfig.exe	cmd.exe
PID 3736 wrote to memory of 208	3736	ipconfig.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3000
- 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:3932
- - 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:2656
- C:\Windows\SysWOW64\ipconfig.exe
  "C:\Windows\SysWOW64\ipconfig.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3736
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"
    3⤵
    PID:208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsf46C5.tmp\k5ig8v1xqqd111h.dll

MD5
fe9e8afe6e228256eaf3065c403d87bb

SHA1
1d46976328242b9e4f37d994bc1f169ee1f4c112

SHA256
e2b161127954eb1373158a95ef083d1b00198fef933e9ad5a1496d82d9006b8b

SHA512
573399e2885f89f05e27de783ef286c79dab04ca4e942f62ccbbb40d61fc7ab80baa97b13948b719dcae785d5daa19e4aa23adb4922e9737e0ecbfc2a09ba4a5

Download Submit
memory/208-122-0x0000000000000000-mapping.dmp

Download
memory/2656-116-0x000000000041EAF0-mapping.dmp

Download
memory/2656-118-0x0000000000AE0000-0x0000000000E00000-memory.dmp

Filesize
3.1MB

Download
memory/2656-117-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2656-119-0x0000000000E00000-0x0000000000E14000-memory.dmp

Filesize
80KB

Download
memory/3000-120-0x00000000066E0000-0x00000000067B9000-memory.dmp

Filesize
868KB

Download
memory/3000-127-0x00000000067C0000-0x00000000068E2000-memory.dmp

Filesize
1.1MB

Download
memory/3736-121-0x0000000000000000-mapping.dmp

Download
memory/3736-123-0x0000000000C20000-0x0000000000C2B000-memory.dmp

Filesize
44KB

Download
memory/3736-125-0x0000000002C30000-0x0000000002F50000-memory.dmp

Filesize
3.1MB

Download
memory/3736-124-0x0000000000480000-0x00000000004AE000-memory.dmp

Filesize
184KB

Download
memory/3736-126-0x0000000000950000-0x00000000009E3000-memory.dmp

Filesize
588KB

Download
memory/3932-115-0x0000000002490000-0x0000000002492000-memory.dmp

Filesize
8KB

Download