formbook | 60e3ebeb0d350be55991be238d65e914655754e4e05024ebe02774c70a83d800

General

Target

$PLUGINSDIR/xkaja.dll
Size

34KB
MD5

e5ff8d9cb45aeff5b05a5a1e54336585
SHA1

a2d037bd24fc22f65ab3816ed135f301bd96f051
SHA256

54df2592ba748fedb122fc6c4c18172bec40568fc057b1832cdadc808ce22dcc
SHA512

e2a0aa236957ca5823bcc9f091a263970621715f85f89bfb78adc5333cafe912db1e51bf00e8e592f08089e91cfe62a71070745f5ed131c1c0c025211c667582
SSDEEP

768:LIF+gXlS8F3QmLWUL3CwTm57emto2Oslp:LBgXJgmLWaFOemrOy

Score

10^/10

formbook dn7r discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral3/memory/1268-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1268-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1560-10-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1300 set thread context of 1268	1300	rundll32.exe	31
PID 1268 set thread context of 1200	1268	rundll32.exe	21
PID 1560 set thread context of 1200	1560	msdt.exe	21

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1268	rundll32.exe
1268	rundll32.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe
1560	msdt.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1268	rundll32.exe
1268	rundll32.exe
1268	rundll32.exe
1560	msdt.exe
1560	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1268	rundll32.exe
Token: SeDebugPrivilege	1560	msdt.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 2568 wrote to memory of 1300	2568	rundll32.exe	30
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1300 wrote to memory of 1268	1300	rundll32.exe	31
PID 1200 wrote to memory of 1560	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1560	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1560	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1560	1200	Explorer.EXE	33
PID 1560 wrote to memory of 2508	1560	msdt.exe	34
PID 1560 wrote to memory of 2508	1560	msdt.exe	34
PID 1560 wrote to memory of 2508	1560	msdt.exe	34
PID 1560 wrote to memory of 2508	1560	msdt.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xkaja.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xkaja.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1300
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xkaja.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1268
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2620
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1560
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-6-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1200-7-0x0000000004BC0000-0x0000000004CA0000-memory.dmp

Filesize
896KB

Download
memory/1200-11-0x0000000004BC0000-0x0000000004CA0000-memory.dmp

Filesize
896KB

Download
memory/1268-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1268-2-0x0000000002290000-0x0000000002593000-memory.dmp

Filesize
3.0MB

Download
memory/1268-5-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1268-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1300-0-0x0000000010009000-0x000000001000B000-memory.dmp

Filesize
8KB

Download
memory/1560-8-0x0000000000B90000-0x0000000000C84000-memory.dmp

Filesize
976KB

Download
memory/1560-9-0x0000000000B90000-0x0000000000C84000-memory.dmp

Filesize
976KB

Download
memory/1560-10-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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