formbook | 26b9c2220fa1bef6a477b8303062792420b9fbf3eb4d21da840b11bf93c5d9dc

General

Target

DHLdocumentsPDF.exe
Size

727KB
MD5

3443feb2f20fa6f6786c585a984d7f3e
SHA1

fbda1359faede8b116b7eeb24c02e422f05f674f
SHA256

26b9c2220fa1bef6a477b8303062792420b9fbf3eb4d21da840b11bf93c5d9dc
SHA512

f3f4a4bcae338a24a53ca5125317eac81570234c818679f53f8a4b36a99738a873c5a3bbddcc431c43f262c263f353cd4616d6e81ba92c7af6b027529c94422b
SSDEEP

12288:cePDXRuoLrmCi5WRSKT5rnzjQjfCplpuyjAMqYmRgStP+H7A11HsX:cePp0KT5tuysMqYYmbG5s

Score

10^/10

formbook b31a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b31a

Decoy

enjamin-paaac.buzz

mail-marketing-40950.bond

pusems28-post.cyou

hindo.top

ruck-company-be.today

asinos-deutschland.net

ewancash.boats

etdopovo.casino

rcher-saaac.buzz

871166.vip

manuel.app

g3yqo.shop

-9way.xyz

qawgytfexe.bond

iefi6834.vip

ental-health-35901.bond

idat-merkez18.top

rojectleadzone.website

lirudolph.top

migloballlc.online

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2352-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2352-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2352-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1668-26-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2636	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 2352	2516	DHLdocumentsPDF.exe	30
PID 2352 set thread context of 1200	2352	DHLdocumentsPDF.exe	21
PID 2352 set thread context of 1200	2352	DHLdocumentsPDF.exe	21
PID 1668 set thread context of 1200	1668	wuapp.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHLdocumentsPDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuapp.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2516	DHLdocumentsPDF.exe
2516	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe
1668	wuapp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2352	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
2352	DHLdocumentsPDF.exe
1668	wuapp.exe
1668	wuapp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	DHLdocumentsPDF.exe
Token: SeDebugPrivilege	2352	DHLdocumentsPDF.exe
Token: SeDebugPrivilege	1668	wuapp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 2516 wrote to memory of 2352	2516	DHLdocumentsPDF.exe	30
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1668	1200	Explorer.EXE	32
PID 1668 wrote to memory of 2636	1668	wuapp.exe	33
PID 1668 wrote to memory of 2636	1668	wuapp.exe	33
PID 1668 wrote to memory of 2636	1668	wuapp.exe	33
PID 1668 wrote to memory of 2636	1668	wuapp.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\DHLdocumentsPDF.exe
  "C:\Users\Admin\AppData\Local\Temp\DHLdocumentsPDF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Users\Admin\AppData\Local\Temp\DHLdocumentsPDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DHLdocumentsPDF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2352
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.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:1668
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\DHLdocumentsPDF.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2636

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/1200-17-0x00000000031E0000-0x00000000032E0000-memory.dmp

Filesize
1024KB

Download
memory/1200-28-0x00000000031E0000-0x00000000032E0000-memory.dmp

Filesize
1024KB

Download
memory/1200-27-0x00000000067A0000-0x0000000006913000-memory.dmp

Filesize
1.4MB

Download
memory/1200-22-0x0000000006680000-0x0000000006792000-memory.dmp

Filesize
1.1MB

Download
memory/1200-23-0x00000000067A0000-0x0000000006913000-memory.dmp

Filesize
1.4MB

Download
memory/1200-18-0x0000000006680000-0x0000000006792000-memory.dmp

Filesize
1.1MB

Download
memory/1668-26-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/1668-24-0x0000000000D50000-0x0000000000D5B000-memory.dmp

Filesize
44KB

Download
memory/1668-25-0x0000000000D50000-0x0000000000D5B000-memory.dmp

Filesize
44KB

Download
memory/2352-13-0x0000000000C70000-0x0000000000F73000-memory.dmp

Filesize
3.0MB

Download
memory/2352-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-21-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/2352-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-16-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2352-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2352-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2516-6-0x0000000004D60000-0x0000000004DD6000-memory.dmp

Filesize
472KB

Download
memory/2516-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/2516-12-0x0000000074C40000-0x000000007532E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-5-0x0000000074C40000-0x000000007532E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-4-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/2516-3-0x0000000000350000-0x0000000000360000-memory.dmp

Filesize
64KB

Download
memory/2516-2-0x0000000074C40000-0x000000007532E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-1-0x0000000000A20000-0x0000000000ADC000-memory.dmp

Filesize
752KB

Download

Analysis

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