formbook | c5cd34b02edf4237ffc0f3cf349c323dbb4c4e86c4ae3995595960ec66fc44f3

Analysis

max time kernel
297s
max time network
295s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 10:32

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General

Target

doc_2024120289986556.exe
Size

991KB
MD5

b57d94df7f67bd053f7f73c98d64d4d0
SHA1

971bad50b10b4a7e275543bf68e48e367309a1ed
SHA256

449a3b5d6001e64b6b1a86e4c0fb7bac53d2679947f26948264554e4cb7a4372
SHA512

67fc5ab3e433e4ebff85470b1b378fbd94aec716b08b557474d6745d090212f13f1e95d527a4135ee4ee424b7889e7bc94b9cd287ae25a7c903ae03774fb5832
SSDEEP

24576:2vCFfkjQtYixBYTpTZONDejqaBjiMD95Q7F:pFfkgtUTpSej9iMD9Q

Score

10^/10

formbook guloader g92s discovery downloader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

g92s

Decoy

lobalnews.skin

arehouse-inventory-89734.bond

isknews.online

reatfragrancecollection.net

ushaogang4.fun

agorajaku4d.pro

18p10.vip

yperionfocus.store

leva.cat

io-rduga1-ben.xyz

iscovermore.online

ootsprojectbali.camera

etzsrv.xyz

utureaiquantification.xyz

rooksexcavation.cam

5vintage.shop

lackfridayangebot.online

djmoqvxz.cyou

dams-care.online

ood-20241020-763.today

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook
Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Formbook payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3344-31-0x0000000000400000-0x0000000001654000-memory.dmp	formbook
behavioral2/memory/3344-33-0x0000000000400000-0x0000000001654000-memory.dmp	formbook
behavioral2/memory/5080-38-0x00000000005D0000-0x00000000005FF000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

doc_2024120289986556.exe

pid	Process
5072	doc_2024120289986556.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

doc_2024120289986556.exe

pid	Process
3344	doc_2024120289986556.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

doc_2024120289986556.exedoc_2024120289986556.exe

pid	Process
5072	doc_2024120289986556.exe
3344	doc_2024120289986556.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

doc_2024120289986556.exedoc_2024120289986556.exemsiexec.exe

description	pid	Process	procid_target
PID 5072 set thread context of 3344	5072	doc_2024120289986556.exe	82
PID 3344 set thread context of 3580	3344	doc_2024120289986556.exe	56
PID 5080 set thread context of 3580	5080	msiexec.exe	56

Drops file in Program Files directory 1 IoCs

Processes:

doc_2024120289986556.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\carbinol\kogejomfruens.for	doc_2024120289986556.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Processes:

doc_2024120289986556.exedoc_2024120289986556.exemsiexec.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	doc_2024120289986556.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	doc_2024120289986556.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

doc_2024120289986556.exemsiexec.exe

pid	Process
3344	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe
5080	msiexec.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

doc_2024120289986556.exedoc_2024120289986556.exemsiexec.exe

pid	Process
5072	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
3344	doc_2024120289986556.exe
5080	msiexec.exe
5080	msiexec.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

doc_2024120289986556.exemsiexec.exeExplorer.EXE

description	pid	Process
Token: SeDebugPrivilege	3344	doc_2024120289986556.exe
Token: SeDebugPrivilege	5080	msiexec.exe
Token: SeShutdownPrivilege	3580	Explorer.EXE
Token: SeCreatePagefilePrivilege	3580	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

doc_2024120289986556.exeExplorer.EXEmsiexec.exe

description	pid	Process	procid_target
PID 5072 wrote to memory of 3344	5072	doc_2024120289986556.exe	82
PID 5072 wrote to memory of 3344	5072	doc_2024120289986556.exe	82
PID 5072 wrote to memory of 3344	5072	doc_2024120289986556.exe	82
PID 5072 wrote to memory of 3344	5072	doc_2024120289986556.exe	82
PID 5072 wrote to memory of 3344	5072	doc_2024120289986556.exe	82
PID 3580 wrote to memory of 5080	3580	Explorer.EXE	92
PID 3580 wrote to memory of 5080	3580	Explorer.EXE	92
PID 3580 wrote to memory of 5080	3580	Explorer.EXE	92
PID 5080 wrote to memory of 4464	5080	msiexec.exe	93
PID 5080 wrote to memory of 4464	5080	msiexec.exe	93
PID 5080 wrote to memory of 4464	5080	msiexec.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Users\Admin\AppData\Local\Temp\doc_2024120289986556.exe
  "C:\Users\Admin\AppData\Local\Temp\doc_2024120289986556.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:5072
- - C:\Users\Admin\AppData\Local\Temp\doc_2024120289986556.exe
    "C:\Users\Admin\AppData\Local\Temp\doc_2024120289986556.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3344
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.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:5080
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\doc_2024120289986556.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsj905A.tmp\System.dll

Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
memory/3344-20-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3344-37-0x0000000001660000-0x0000000003C4B000-memory.dmp

Filesize
37.9MB

Download
memory/3344-33-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3344-31-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3344-16-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3344-17-0x0000000001660000-0x0000000003C4B000-memory.dmp

Filesize
37.9MB

Download
memory/3344-18-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3344-19-0x0000000001660000-0x0000000003C4B000-memory.dmp

Filesize
37.9MB

Download
memory/3580-50-0x0000000007080000-0x0000000007176000-memory.dmp

Filesize
984KB

Download
memory/5072-13-0x0000000002A60000-0x000000000504B000-memory.dmp

Filesize
37.9MB

Download
memory/5072-15-0x0000000002A60000-0x000000000504B000-memory.dmp

Filesize
37.9MB

Download
memory/5072-14-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/5072-12-0x00000000777E1000-0x0000000077901000-memory.dmp

Filesize
1.1MB

Download
memory/5072-11-0x0000000002A60000-0x000000000504B000-memory.dmp

Filesize
37.9MB

Download
memory/5080-32-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/5080-36-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/5080-34-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/5080-38-0x00000000005D0000-0x00000000005FF000-memory.dmp

Filesize
188KB

Download