formbook | c9549188a883c695f762d2af10e33868ce431ab96537bde6e81824364f5d4f89

General

Target

S12GF803.exe
Size

252KB
MD5

6aeeb261a692fa9e104320c7247968ef
SHA1

96c1ef5d7f32c4701557aba801ddf192f19c163f
SHA256

4f6f954d067f1af2bf8caca9e7ea103d8dbfb7507514847b999328e108b456af
SHA512

04f189b93c29424f4c840484f19beefaf831952e62b47bc3f03699a9bf084990862638432371d029babcbe7d437f7ae6f91a166fc1b377932ab2d24a1f974bbb
SSDEEP

3072:/Nyah0mJh4IKLAtHeekOLYkX2Y5hpwdYfBiZVekqdz2wB1EcbTVdEuCPxbS3G549:/waqMYkmY57wdNZVLcqw8cbzP/F9

Score

10^/10

formbook sl12 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sl12

Decoy

monsore-records.com

discoverthis.world

ishop-brasil.com

foxeshaveholesintl.com

currenteitherknowledge.xyz

haaph.com

leggacyfarm.com

theaudiobookdb.net

ungerstahlbaubrehna.com

cliphindi.com

thht86.com

b4d5h0t.com

yashentcbsmall.com

ltcibenefits.com

allwaystravelservice.com

1gethear.com

elstery.com

buyervalet.com

snowyrangecpa.com

bshuan.icu

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2748-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2748-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2748-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2580-25-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
884	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	S12GF803.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2748	2068	S12GF803.exe	30
PID 2748 set thread context of 1196	2748	S12GF803.exe	21
PID 2748 set thread context of 1196	2748	S12GF803.exe	21
PID 2580 set thread context of 1196	2580	cmd.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	S12GF803.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2748	S12GF803.exe
2748	S12GF803.exe
2748	S12GF803.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe
2580	cmd.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2748	S12GF803.exe
2748	S12GF803.exe
2748	S12GF803.exe
2748	S12GF803.exe
2580	cmd.exe
2580	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	S12GF803.exe
Token: SeDebugPrivilege	2580	cmd.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 2068 wrote to memory of 2748	2068	S12GF803.exe	30
PID 1196 wrote to memory of 2580	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2580	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2580	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2580	1196	Explorer.EXE	31
PID 2580 wrote to memory of 884	2580	cmd.exe	32
PID 2580 wrote to memory of 884	2580	cmd.exe	32
PID 2580 wrote to memory of 884	2580	cmd.exe	32
PID 2580 wrote to memory of 884	2580	cmd.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\S12GF803.exe
  "C:\Users\Admin\AppData\Local\Temp\S12GF803.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Users\Admin\AppData\Local\Temp\S12GF803.exe
    "C:\Users\Admin\AppData\Local\Temp\S12GF803.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:2580
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\S12GF803.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:884

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\nstFE1F.tmp\gtrvk.dll

Filesize
5KB

MD5
3627e0a769af64650e5ce46db6bb0532

SHA1
e203eaa9b1ad5d324af6696f5d1a62cd58e3513a

SHA256
a5699137065d3f0f5a26372a17eecc76905599435d866608f10c38760eb43e52

SHA512
044cb6198c848e4edd870fc9a5647e6a4644753986f2557da0babb0c9004ca14031b93c4db92d84754a297619bb87bdb6f847a3887c037180df4603583b908d1

Download Submit
memory/1196-26-0x0000000006E50000-0x0000000006FA5000-memory.dmp

Filesize
1.3MB

Download
memory/1196-13-0x0000000002FC0000-0x00000000030C0000-memory.dmp

Filesize
1024KB

Download
memory/1196-14-0x0000000007700000-0x0000000007885000-memory.dmp

Filesize
1.5MB

Download
memory/1196-17-0x0000000004350000-0x0000000004550000-memory.dmp

Filesize
2.0MB

Download
memory/1196-18-0x0000000006E50000-0x0000000006FA5000-memory.dmp

Filesize
1.3MB

Download
memory/1196-19-0x0000000007700000-0x0000000007885000-memory.dmp

Filesize
1.5MB

Download
memory/2068-9-0x0000000001E20000-0x0000000001E22000-memory.dmp

Filesize
8KB

Download
memory/2580-24-0x000000004AC80000-0x000000004ACCC000-memory.dmp

Filesize
304KB

Download
memory/2580-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2580-22-0x000000004AC80000-0x000000004ACCC000-memory.dmp

Filesize
304KB

Download
memory/2748-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2748-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2748-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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