formbook | c7b093c037ac1aeabaf010ec82042f89e87f667f41a5786d14d524c82c84f95b

Analysis

max time kernel
147s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 16:02

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General

Target

skyrun6678zhwevi.exe
Size

1.0MB
MD5

43e40486285956beaffed65745f28b0a
SHA1

98f08012fd95967761b71b64ce3c91332c4bdc37
SHA256

c7757a3c21c62d9f56a30bfe1660727de4932993c0d4e3c650f001914599905b
SHA512

f7ff5cd2ab47153d7f699e55583afa6dc1d34d3e60abf9f43d13011136512d3e48474cd2e13cd9454f53a6260669fe54c50220e870fe3c486a5cb7bc7f6f454b
SSDEEP

24576:aRA4228CFtXo2A/Nzf1pccEOw2ia84Pj2hQ2PQrY:ah2JCFtXo2Yd+2ia84PShQ2IrY

Score

10^/10

formbook sn31 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sn31

Decoy

matsuomatsuo.com

104wn.com

bolacorner.com

dawonderer.com

yourpamlano.xyz

mtzmx.icu

lepakzaparket.com

barmagli.com

danta.ltd

marumaru240.com

people-centeredhr.com

test-brew-inc.com

clairvoyantbusinesscoach.com

aforeignexchangeblog.com

erentekbilisim.com

gangqinqu123.net

defiguaranteebonds.com

thegioigaubong97.site

vaoiwin.info

vcwholeness.com

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
behavioral1/memory/1920-1550-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1920-1553-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1920-1557-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2200 set thread context of 1920	2200	skyrun6678zhwevi.exe	32
PID 1920 set thread context of 1272	1920	InstallUtil.exe	21
PID 1920 set thread context of 1272	1920	InstallUtil.exe	21
PID 612 set thread context of 1272	612	cmmon32.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	skyrun6678zhwevi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
2200	skyrun6678zhwevi.exe
1920	InstallUtil.exe
1920	InstallUtil.exe
1920	InstallUtil.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1920	InstallUtil.exe
1920	InstallUtil.exe
1920	InstallUtil.exe
1920	InstallUtil.exe
612	cmmon32.exe
612	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2200	skyrun6678zhwevi.exe
Token: SeDebugPrivilege	1920	InstallUtil.exe
Token: SeDebugPrivilege	612	cmmon32.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 6632	2200	skyrun6678zhwevi.exe	31
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 2200 wrote to memory of 1920	2200	skyrun6678zhwevi.exe	32
PID 1920 wrote to memory of 612	1920	InstallUtil.exe	34
PID 1920 wrote to memory of 612	1920	InstallUtil.exe	34
PID 1920 wrote to memory of 612	1920	InstallUtil.exe	34
PID 1920 wrote to memory of 612	1920	InstallUtil.exe	34
PID 612 wrote to memory of 112	612	cmmon32.exe	35
PID 612 wrote to memory of 112	612	cmmon32.exe	35
PID 612 wrote to memory of 112	612	cmmon32.exe	35
PID 612 wrote to memory of 112	612	cmmon32.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1272
- C:\Users\Admin\AppData\Local\Temp\skyrun6678zhwevi.exe
  "C:\Users\Admin\AppData\Local\Temp\skyrun6678zhwevi.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    3⤵
    PID:6632
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    3⤵
    - 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:1920
  - - C:\Windows\SysWOW64\cmmon32.exe
      "C:\Windows\SysWOW64\cmmon32.exe"
      4⤵
      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:612
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:112
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/612-1563-0x00000000001A0000-0x00000000001AD000-memory.dmp

Filesize
52KB

Download
memory/1272-1555-0x0000000004F60000-0x0000000005016000-memory.dmp

Filesize
728KB

Download
memory/1272-1564-0x0000000006A40000-0x0000000006AFE000-memory.dmp

Filesize
760KB

Download
memory/1272-1560-0x0000000004F60000-0x0000000005016000-memory.dmp

Filesize
728KB

Download
memory/1272-1559-0x0000000006A40000-0x0000000006AFE000-memory.dmp

Filesize
760KB

Download
memory/1920-1550-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1920-1551-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1920-1553-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1920-1554-0x00000000001A0000-0x00000000001B4000-memory.dmp

Filesize
80KB

Download
memory/1920-1557-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1920-1558-0x00000000002F0000-0x0000000000304000-memory.dmp

Filesize
80KB

Download
memory/2200-60-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-62-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-12-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-14-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-16-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-18-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-20-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-22-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-24-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-32-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-34-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-42-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-56-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-8-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-26-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-28-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-40-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-66-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-64-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-10-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-58-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-54-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-52-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-50-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-48-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-46-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-44-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-38-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-36-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-6-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-4-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-3-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-2-0x0000000001100000-0x0000000001206000-memory.dmp

Filesize
1.0MB

Download
memory/2200-1-0x0000000001300000-0x0000000001406000-memory.dmp

Filesize
1.0MB

Download
memory/2200-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2200-30-0x0000000001100000-0x00000000011FF000-memory.dmp

Filesize
1020KB

Download
memory/2200-1539-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2200-1540-0x0000000004D20000-0x0000000004DB2000-memory.dmp

Filesize
584KB

Download
memory/2200-1541-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2200-1549-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download