formbook | c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f

General

Target

c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
Size

843KB
MD5

bdf2729b43adc0cfd2163da5251faf8d
SHA1

77d9f7148df3c7e24759842c0b5c1e7e3303afad
SHA256

c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f
SHA512

1bc42b30b436205c8490940dbf1294d48efae5c1d46d37c47233f37a303eb29fa3652323a675278ed414aa3009e8e339ddcd7790266b2e5f1e7d4822c907f3bf
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLUdfX1AINfrm39o77XZH:ffmMv6Ckr7Mny5QL4fCINDm3ufZH

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

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/2752-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2752-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2756-14-0x00000000000E0000-0x000000000010F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 2752 set thread context of 1232	2752	svchost.exe	21
PID 2756 set thread context of 1232	2756	raserver.exe	21

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 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	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.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 31 IoCs

pid	Process
2752	svchost.exe
2752	svchost.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe
2756	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
2752	svchost.exe
2752	svchost.exe
2752	svchost.exe
2756	raserver.exe
2756	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2752	svchost.exe
Token: SeDebugPrivilege	2756	raserver.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
1232	Explorer.EXE
1232	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 2424 wrote to memory of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 2424 wrote to memory of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 2424 wrote to memory of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 2424 wrote to memory of 2752	2424	c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe	30
PID 1232 wrote to memory of 2756	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2756	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2756	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2756	1232	Explorer.EXE	31
PID 2756 wrote to memory of 2560	2756	raserver.exe	32
PID 2756 wrote to memory of 2560	2756	raserver.exe	32
PID 2756 wrote to memory of 2560	2756	raserver.exe	32
PID 2756 wrote to memory of 2560	2756	raserver.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe
  "C:\Users\Admin\AppData\Local\Temp\c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\c1c9f8bb5456d46da8d8ce22f410eb92b73ed6d8e7b01e3969bb38f33955fa2f.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2752
- 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:2756
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2560

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

memory/1232-15-0x0000000004EB0000-0x0000000005046000-memory.dmp

Filesize
1.6MB

Download
memory/1232-24-0x0000000005050000-0x0000000005179000-memory.dmp

Filesize
1.2MB

Download
memory/1232-22-0x0000000005050000-0x0000000005179000-memory.dmp

Filesize
1.2MB

Download
memory/1232-21-0x0000000005050000-0x0000000005179000-memory.dmp

Filesize
1.2MB

Download
memory/1232-11-0x0000000004EB0000-0x0000000005046000-memory.dmp

Filesize
1.6MB

Download
memory/2424-5-0x00000000009A0000-0x00000000009A4000-memory.dmp

Filesize
16KB

Download
memory/2752-10-0x0000000000220000-0x0000000000234000-memory.dmp

Filesize
80KB

Download
memory/2752-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2752-7-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/2752-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-13-0x0000000000D00000-0x0000000000D1C000-memory.dmp

Filesize
112KB

Download
memory/2756-14-0x00000000000E0000-0x000000000010F000-memory.dmp

Filesize
188KB

Download
memory/2756-12-0x0000000000D00000-0x0000000000D1C000-memory.dmp

Filesize
112KB

Download

Analysis

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