formbook | b85c8547897495eea72da004d6579754bfa857b4cfb90b8405309e65bfeed216

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 00:01

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General

Target

3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe
Size

1.1MB
MD5

71415d61dd3a653e017514280a4e05c4
SHA1

89bed5f613401c5816f3b22816f84d5f8067db3b
SHA256

3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5
SHA512

971407b4327c3a9fe1ff76f0ec84874522865ae08f338ec0985a1ef78066a59412d323a4a2731d33dec129c89355b7aa95fe36f4425db8ad6ea1151f5b9c2098
SSDEEP

24576:UAOcZXcxP61ptWw+avL8pnp3qY7daGAuvZG31RMaas/xmR:CH+tWw+S8D3r70QA3XM9n

Score

10^/10

formbook je14 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

je14

Decoy

innervisionbuildings.com

theenergysocialite.com

565548.com

panghr.com

onlyonesolutions.com

stjohnzone6.com

cnotes.rest

helfeb.online

xixi-s-inc.club

easilyentered.com

theshopx.store

mrclean-ac.com

miamibeachwateradventures.com

jpearce.co.uk

seseragi-bunkou.com

minimaddie.com

commbank-help-849c3.com

segohandelsonderneming.com

namthanhreal.com

fototerapi.online

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
behavioral2/memory/1496-55-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1496-58-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1496-62-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2348-68-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe

Executes dropped EXE 1 IoCs

pid	Process
4528	estrlf.pif

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4528 set thread context of 1496	4528	estrlf.pif	86
PID 1496 set thread context of 3540	1496	RegSvcs.exe	56
PID 1496 set thread context of 3540	1496	RegSvcs.exe	56
PID 2348 set thread context of 3540	2348	NETSTAT.EXE	56

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	estrlf.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2348	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE
2348	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
1496	RegSvcs.exe
2348	NETSTAT.EXE
2348	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1496	RegSvcs.exe
Token: SeShutdownPrivilege	3540	Explorer.EXE
Token: SeCreatePagefilePrivilege	3540	Explorer.EXE
Token: SeShutdownPrivilege	3540	Explorer.EXE
Token: SeCreatePagefilePrivilege	3540	Explorer.EXE
Token: SeDebugPrivilege	2348	NETSTAT.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 4528	3016	3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe	83
PID 3016 wrote to memory of 4528	3016	3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe	83
PID 3016 wrote to memory of 4528	3016	3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe	83
PID 4528 wrote to memory of 2212	4528	estrlf.pif	85
PID 4528 wrote to memory of 2212	4528	estrlf.pif	85
PID 4528 wrote to memory of 2212	4528	estrlf.pif	85
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 4528 wrote to memory of 1496	4528	estrlf.pif	86
PID 3540 wrote to memory of 2348	3540	Explorer.EXE	94
PID 3540 wrote to memory of 2348	3540	Explorer.EXE	94
PID 3540 wrote to memory of 2348	3540	Explorer.EXE	94
PID 2348 wrote to memory of 4020	2348	NETSTAT.EXE	97
PID 2348 wrote to memory of 4020	2348	NETSTAT.EXE	97
PID 2348 wrote to memory of 4020	2348	NETSTAT.EXE	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe
  "C:\Users\Admin\AppData\Local\Temp\3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Users\Admin\AppData\Roaming\5_29\estrlf.pif
    "C:\Users\Admin\AppData\Roaming\5_29\estrlf.pif" tvsgb.tls
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4528
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      PID:2212
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1496
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\Roaming\5_29\estrlf.pif

Filesize
794KB

MD5
18e404787e9c044105f5c4bec4600bd8

SHA1
9f1015bd7f33a6f3c1cc12c0971f51b1adee1939

SHA256
e15984dc8ea9627d370c40178676490129427e2dc23499f68c9c65c4386fea12

SHA512
c6a1faae524968351b4841665bfe1c5255f7e6c115b7a81a4b6c65626f23f7f15e4bb856914fce15225c33a2e2b6166b3f1f87698895fe0ce4cb084b630c2a5f

Download Submit
C:\Users\Admin\AppData\Roaming\5_29\gdrqa.icm

Filesize
41KB

MD5
285afea69a2e1f8aae59a0c748aa2bd8

SHA1
8a087a497757b6beccf483687fb0d1edec45d3fa

SHA256
86aeb596d5962ca2389b1dcc252d0ae7b869b9e6ec319e76a387b0bb16baa910

SHA512
2ef2acb9b6377e85e2cf73db99555c91456ecd29dc842dc75f414ff2fbad6667c2c8d0af38a0ffd7a23c7c6a0bb28889671eeb42f61777a0dea85cbfe2cf4404

Download Submit
C:\Users\Admin\AppData\Roaming\5_29\xaguexgkmu.xvk

Filesize
370KB

MD5
56f43e5edcbdfcf4a7e9b8c09c0d2ba2

SHA1
1d47312b6eacbf63b04f83a9b4cd2dad238ae17a

SHA256
a26e71e81529a9cb7aa276618d014c5275cf3f7c356efb0e6b2308e30727a0fb

SHA512
8dd0f07a966aaf0c76fbdbed51184c2d765611128ce9b6e978229dc4954357c78cabef185e636e59827ffb7841913a0d543d60231e1f70aea2d62b0f917eba8a

Download Submit
memory/1496-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1496-56-0x0000000000F30000-0x000000000127A000-memory.dmp

Filesize
3.3MB

Download
memory/1496-59-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/1496-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1496-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1496-63-0x0000000000EE0000-0x0000000000EF4000-memory.dmp

Filesize
80KB

Download
memory/2348-66-0x0000000000580000-0x000000000058B000-memory.dmp

Filesize
44KB

Download
memory/2348-67-0x0000000000580000-0x000000000058B000-memory.dmp

Filesize
44KB

Download
memory/2348-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3540-60-0x0000000008210000-0x00000000082F7000-memory.dmp

Filesize
924KB

Download
memory/3540-64-0x0000000008670000-0x0000000008818000-memory.dmp

Filesize
1.7MB

Download
memory/3540-65-0x0000000008210000-0x00000000082F7000-memory.dmp

Filesize
924KB

Download
memory/3540-72-0x00000000083B0000-0x0000000008455000-memory.dmp

Filesize
660KB

Download