formbook | 4bc9b634895368c7fbff430e5fae559d7710bdac7d6cbbf41d37f72bd06d8801

General

Target

Quote NoRYU15674.exe
Size

534KB
MD5

4f75b9d6f4765318096199de4cc501a6
SHA1

ca57a26c665ec2b566fbd0c103cf44f6e0102810
SHA256

3295195cc0beb345e8af43273cbedbfcc631c4498f7a91bb1dfa82bfd1cda67b
SHA512

7596620eba746ebf0784970c80cf5c3ef563acb70dd0dd8a5762c0690e27eb84e311216924d82de8d28c47d3faec67a2507cb75a217364715fb25d37b7c6eecc
SSDEEP

12288:GAsiJr6HjcETqvMrrSYuQY413gIaENyztD00sxxi0/js:DFlgXTgMKI9Q0NaC0

Score

10^/10

formbook b26m discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b26m

Decoy

zmdjsbe.com

fredandbettysdogtreats.com

naaacyjl.xyz

chestermclean.net

hbxemu.com

daniandlaila.com

liantongquan.com

clubdjportugal.online

ambcu.com

clinkssamui4.xyz

oebfcdtwwkdpspq.com

swnlmu.com

asctechagent.com

melhorearotina.online

infohouseti.com

busstoppanicbutton.com

cheyennewindenergy.com

partlee.com

855408.com

beyourownbossbyob.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/2804-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2804-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2332-22-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2712	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 2804	2244	Quote NoRYU15674.exe	31
PID 2804 set thread context of 1236	2804	Quote NoRYU15674.exe	21
PID 2332 set thread context of 1236	2332	raserver.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	Quote NoRYU15674.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2804	Quote NoRYU15674.exe
2804	Quote NoRYU15674.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe
2332	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2804	Quote NoRYU15674.exe
2804	Quote NoRYU15674.exe
2804	Quote NoRYU15674.exe
2332	raserver.exe
2332	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2804	Quote NoRYU15674.exe
Token: SeDebugPrivilege	2332	raserver.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 2244 wrote to memory of 2804	2244	Quote NoRYU15674.exe	31
PID 1236 wrote to memory of 2332	1236	Explorer.EXE	32
PID 1236 wrote to memory of 2332	1236	Explorer.EXE	32
PID 1236 wrote to memory of 2332	1236	Explorer.EXE	32
PID 1236 wrote to memory of 2332	1236	Explorer.EXE	32
PID 2332 wrote to memory of 2712	2332	raserver.exe	33
PID 2332 wrote to memory of 2712	2332	raserver.exe	33
PID 2332 wrote to memory of 2712	2332	raserver.exe	33
PID 2332 wrote to memory of 2712	2332	raserver.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2804
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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\Quote NoRYU15674.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2712

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

Loading Replay Monitor...

Downloads

memory/1236-19-0x00000000052B0000-0x00000000053D2000-memory.dmp

Filesize
1.1MB

Download
memory/1236-23-0x00000000052B0000-0x00000000053D2000-memory.dmp

Filesize
1.1MB

Download
memory/2244-5-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2244-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2244-4-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2244-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2244-6-0x0000000000AB0000-0x0000000000B18000-memory.dmp

Filesize
416KB

Download
memory/2244-1-0x0000000000C80000-0x0000000000D0C000-memory.dmp

Filesize
560KB

Download
memory/2244-3-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/2244-14-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2332-20-0x0000000000B90000-0x0000000000BAC000-memory.dmp

Filesize
112KB

Download
memory/2332-21-0x0000000000B90000-0x0000000000BAC000-memory.dmp

Filesize
112KB

Download
memory/2332-22-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2804-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-18-0x0000000000140000-0x0000000000154000-memory.dmp

Filesize
80KB

Download
memory/2804-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-15-0x0000000000D10000-0x0000000001013000-memory.dmp

Filesize
3.0MB

Download
memory/2804-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing