formbook | 53a703b29d5aebc4a0b5794d0904e49aa90d72525018df4f9121e5da86116534

General

Target

RFQ_BDS636011.exe
Size

694KB
MD5

74f8407f98ac51a0b9feb8782bd8f7c9
SHA1

d49d93ac8941442fe52eda4b1240f3afd620bb08
SHA256

53a703b29d5aebc4a0b5794d0904e49aa90d72525018df4f9121e5da86116534
SHA512

9ee6d913eeabc524e2f271b87e7df993adeb886299ec12ceb81790355d234439fac5ab2c98f6cbcca6742bcb0abe3fd603add6bcdd17ea0bf8ebdda12c6aa790
SSDEEP

12288:xXFAO0Qb6xMem7HGKCdt44epEx3linXjVdiyqkkHnZ4CCVjscJ4nX0q2mY9+QQhX:xXFN0Yem7Q3yOx3gnXRdiZ9HkV+nX0qj

Score

10^/10

formbook guloader hy29 discovery downloader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hy29

Decoy

obswell.online

etflix.luxury

ulunguwethu.store

ulbcenter.shop

nswering-service-mi-de-tt.click

upport-marketplace84.click

wepxbd163.lat

mplants-doctors.today

aofexf90yj.top

hermodynamic.space

dfg3n489.cyou

off.gay

alkak.cam

ijanarko.net

7tl.site

yaanincma.store

ires-47022.bond

elek4dalt77.xyz

foxsakepeople.online

ndefeatedqs.shop

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 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2892-20-0x0000000000400000-0x0000000001462000-memory.dmp	formbook
behavioral1/memory/2892-21-0x0000000000400000-0x0000000001462000-memory.dmp	formbook
behavioral1/memory/2892-24-0x0000000000400000-0x0000000001462000-memory.dmp	formbook
behavioral1/memory/2332-27-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1096	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2788	RFQ_BDS636011.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2892	RFQ_BDS636011.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2788	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 2892	2788	RFQ_BDS636011.exe	31
PID 2892 set thread context of 1196	2892	RFQ_BDS636011.exe	21
PID 2892 set thread context of 1196	2892	RFQ_BDS636011.exe	21
PID 2332 set thread context of 1196	2332	cmmon32.exe	21

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\fips\beskydende.ini	RFQ_BDS636011.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ_BDS636011.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ_BDS636011.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 29 IoCs

pid	Process
2892	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe
2332	cmmon32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2788	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2892	RFQ_BDS636011.exe
2332	cmmon32.exe
2332	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	RFQ_BDS636011.exe
Token: SeDebugPrivilege	2332	cmmon32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 2788 wrote to memory of 2892	2788	RFQ_BDS636011.exe	31
PID 1196 wrote to memory of 2332	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2332	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2332	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2332	1196	Explorer.EXE	33
PID 2332 wrote to memory of 1096	2332	cmmon32.exe	34
PID 2332 wrote to memory of 1096	2332	cmmon32.exe	34
PID 2332 wrote to memory of 1096	2332	cmmon32.exe	34
PID 2332 wrote to memory of 1096	2332	cmmon32.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\RFQ_BDS636011.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ_BDS636011.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Users\Admin\AppData\Local\Temp\RFQ_BDS636011.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_BDS636011.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:2892
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:2332
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\RFQ_BDS636011.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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

\Users\Admin\AppData\Local\Temp\nsoEACE.tmp\System.dll

Filesize
12KB

MD5
4add245d4ba34b04f213409bfe504c07

SHA1
ef756d6581d70e87d58cc4982e3f4d18e0ea5b09

SHA256
9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706

SHA512
1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

Download Submit
memory/1196-23-0x0000000003FE0000-0x00000000041E0000-memory.dmp

Filesize
2.0MB

Download
memory/1196-30-0x00000000079D0000-0x0000000007B05000-memory.dmp

Filesize
1.2MB

Download
memory/2332-27-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/2332-26-0x0000000000FB0000-0x0000000000FBD000-memory.dmp

Filesize
52KB

Download
memory/2788-13-0x0000000004BC0000-0x0000000006C1E000-memory.dmp

Filesize
32.4MB

Download
memory/2788-15-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download
memory/2788-14-0x0000000077281000-0x0000000077382000-memory.dmp

Filesize
1.0MB

Download
memory/2788-16-0x0000000004BC0000-0x0000000006C1E000-memory.dmp

Filesize
32.4MB

Download
memory/2788-17-0x0000000004BC0000-0x0000000006C1E000-memory.dmp

Filesize
32.4MB

Download
memory/2892-18-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2892-24-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2892-21-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2892-20-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2892-19-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download

Analysis

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