formbook | a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8

General

Target

tmp.exe
Size

2.1MB
MD5

dc86d8c67a66d23d6cba86036dacd475
SHA1

3c803edc8f87f3c69c460ccf1255ed8c9c1651f6
SHA256

a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8
SHA512

941b380f3c393ebb776b0d181b290550b528534f50b6bb55ada418f3639d8ccd07587303a7b680937c0b641e838cc2f98265d93f56d7bbcd9419e7a2512a69f3
SSDEEP

24576:MuOolI+AqJiMqbPf8/cEnn8jrO+jfn2QaRgRBmjb+Ba56r19EvAI3eQFZ:x3Aq0U/cbjjL2Q+gRBKyq6r19mAI3RF

Score

10^/10

formbook do25 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

do25

Decoy

nickifarina.site

nfptrwge.bar

nobreemporio.com

split-acres.com

sharingservice-act.com

nakedinktees.shop

zhensheng1988.com

ipiton.com

liftoffdigitalmarketing.com

karen.cool

theprotestantchurch.com

shirhadarr.com

azdtwp.com

comzestdent.com

jnsjh.com

in-heat-cool.com

dfefej.top

tumingchun.com

eisei-shouji.tokyo

sparecreeping.com

Signatures

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

Formbook payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/980-64-0x000000000041F160-mapping.dmp	formbook
behavioral1/memory/980-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/980-70-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/380-73-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook
behavioral1/memory/380-78-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1084 cmd.exe

pid	process
1084	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\gedata = "\"C:\\Users\\Admin\\AppData\\Roaming\\gedata.exe\""	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exerundll32.exe

description	pid	process	target process
PID 1096 set thread context of 980	1096	tmp.exe	tmp.exe
PID 980 set thread context of 1396	980	tmp.exe	Explorer.EXE
PID 380 set thread context of 1396	380	rundll32.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 21 IoCs

Processes:

powershell.exetmp.exerundll32.exe

pid	process
1108	powershell.exe
980	tmp.exe
980	tmp.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe
380	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.exerundll32.exe

pid process

980 tmp.exe
980 tmp.exe
980 tmp.exe
380 rundll32.exe
380 rundll32.exe

pid	process
980	tmp.exe
980	tmp.exe
980	tmp.exe
380	rundll32.exe
380	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

tmp.exepowershell.exetmp.exerundll32.exe

description	pid	process
Token: SeDebugPrivilege	1096	tmp.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	980	tmp.exe
Token: SeDebugPrivilege	380	rundll32.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

tmp.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1096 wrote to memory of 1108	1096	tmp.exe	powershell.exe
PID 1096 wrote to memory of 1108	1096	tmp.exe	powershell.exe
PID 1096 wrote to memory of 1108	1096	tmp.exe	powershell.exe
PID 1096 wrote to memory of 1108	1096	tmp.exe	powershell.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1096 wrote to memory of 980	1096	tmp.exe	tmp.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 380	1396	Explorer.EXE	rundll32.exe
PID 380 wrote to memory of 1084	380	rundll32.exe	cmd.exe
PID 380 wrote to memory of 1084	380	rundll32.exe	cmd.exe
PID 380 wrote to memory of 1084	380	rundll32.exe	cmd.exe
PID 380 wrote to memory of 1084	380	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1096
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1108
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    C:\Users\Admin\AppData\Local\Temp\tmp.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:980
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:380
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    3⤵
    - Deletes itself
    PID:1084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/380-69-0x0000000000000000-mapping.dmp

Download
memory/380-78-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/380-76-0x0000000001E70000-0x0000000001F03000-memory.dmp

Filesize
588KB

Download
memory/380-75-0x0000000002000000-0x0000000002303000-memory.dmp

Filesize
3.0MB

Download
memory/380-73-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/380-72-0x0000000000100000-0x000000000010E000-memory.dmp

Filesize
56KB

Download
memory/980-66-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/980-64-0x000000000041F160-mapping.dmp

Download
memory/980-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/980-67-0x0000000000290000-0x00000000002A4000-memory.dmp

Filesize
80KB

Download
memory/980-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/980-70-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/980-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1084-74-0x0000000000000000-mapping.dmp

Download
memory/1096-54-0x0000000001090000-0x00000000012AA000-memory.dmp

Filesize
2.1MB

Download
memory/1096-55-0x0000000004B80000-0x0000000004D94000-memory.dmp

Filesize
2.1MB

Download
memory/1108-59-0x000000006EE50000-0x000000006F3FB000-memory.dmp

Filesize
5.7MB

Download
memory/1108-58-0x000000006EE50000-0x000000006F3FB000-memory.dmp

Filesize
5.7MB

Download
memory/1108-57-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1108-56-0x0000000000000000-mapping.dmp

Download
memory/1396-77-0x0000000003C20000-0x0000000003CD2000-memory.dmp

Filesize
712KB

Download
memory/1396-68-0x0000000005F70000-0x0000000006033000-memory.dmp

Filesize
780KB

Download
memory/1396-79-0x0000000003C20000-0x0000000003CD2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads