formbook | acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2024, 16:22

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General

Target

acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
Size

1.0MB
MD5

e9e768aa357a7e34348c69e41444964d
SHA1

4930b85e20b7967cf0afb1d9ae9ae57ca4d373c9
SHA256

acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b
SHA512

6394564277e7077d9e326cc0f34f3c6ef945ed4d2e6bd812daaef879bb957edd4c8032df14774328799c692cbfb1f784fbf3580e65effdc5d2d42f124f62bb3a
SSDEEP

12288:LKLRCoZzl+CN6XYt8GjKtzp422BxYLWM7Wi9h77:LiCoZzkg8tzpH2BK17L9h77

Score

10^/10

formbook igbn discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

igbn

Decoy

daolangfans.com

creatievecontentpeople.com

cargizmos.net

azure1224.xyz

shopahava.com

recursum.com

rumblerain.com

betmonde396.com

webinarcerdaskanindonesia.com

telemaca.com

hellohurt.com

peaceprairie.com

johntheonlinearborist.com

pilotbxprt.store

creatingsobriety.com

getrightspt.com

104456.com

travelsofwray.com

americagroupperu.com

silberscore.net

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4784-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4784-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4784-25-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2868-33-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

pid	Process
4784	AddInProcess32.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3272 set thread context of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 4784 set thread context of 3460	4784	AddInProcess32.exe	55
PID 4784 set thread context of 3460	4784	AddInProcess32.exe	55
PID 2868 set thread context of 3460	2868	wlanext.exe	55

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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe
2868	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
4784	AddInProcess32.exe
2868	wlanext.exe
2868	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
Token: SeDebugPrivilege	4784	AddInProcess32.exe
Token: SeDebugPrivilege	2868	wlanext.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3272 wrote to memory of 4784	3272	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	82
PID 3460 wrote to memory of 2868	3460	Explorer.EXE	88
PID 3460 wrote to memory of 2868	3460	Explorer.EXE	88
PID 3460 wrote to memory of 2868	3460	Explorer.EXE	88
PID 2868 wrote to memory of 4072	2868	wlanext.exe	91
PID 2868 wrote to memory of 4072	2868	wlanext.exe	91
PID 2868 wrote to memory of 4072	2868	wlanext.exe	91

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3460
- C:\Users\Admin\AppData\Local\Temp\acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
  "C:\Users\Admin\AppData\Local\Temp\acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3272
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4784
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:2868
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\Local\Temp\AddInProcess32.exe

Filesize
42KB

MD5
9827ff3cdf4b83f9c86354606736ca9c

SHA1
e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

SHA256
c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

SHA512
8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

Download Submit
memory/2868-33-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/2868-29-0x0000000000E50000-0x0000000000E67000-memory.dmp

Filesize
92KB

Download
memory/2868-31-0x0000000000E50000-0x0000000000E67000-memory.dmp

Filesize
92KB

Download
memory/3272-7-0x0000000005F30000-0x0000000005F3A000-memory.dmp

Filesize
40KB

Download
memory/3272-12-0x000000000BBC0000-0x000000000BF14000-memory.dmp

Filesize
3.3MB

Download
memory/3272-6-0x0000000005530000-0x0000000005560000-memory.dmp

Filesize
192KB

Download
memory/3272-0-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

Filesize
4KB

Download
memory/3272-9-0x0000000074A30000-0x00000000751E0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-10-0x0000000007340000-0x000000000735A000-memory.dmp

Filesize
104KB

Download
memory/3272-11-0x0000000009980000-0x0000000009986000-memory.dmp

Filesize
24KB

Download
memory/3272-5-0x0000000074A30000-0x00000000751E0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-13-0x000000000BF70000-0x000000000BF92000-memory.dmp

Filesize
136KB

Download
memory/3272-1-0x00000000005A0000-0x00000000006AE000-memory.dmp

Filesize
1.1MB

Download
memory/3272-4-0x0000000005180000-0x000000000521C000-memory.dmp

Filesize
624KB

Download
memory/3272-18-0x0000000074A30000-0x00000000751E0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-2-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/3272-3-0x00000000050E0000-0x0000000005172000-memory.dmp

Filesize
584KB

Download
memory/3460-28-0x00000000084C0000-0x0000000008614000-memory.dmp

Filesize
1.3MB

Download
memory/3460-23-0x00000000084C0000-0x0000000008614000-memory.dmp

Filesize
1.3MB

Download
memory/3460-27-0x0000000008CE0000-0x0000000008E7D000-memory.dmp

Filesize
1.6MB

Download
memory/3460-34-0x0000000008CE0000-0x0000000008E7D000-memory.dmp

Filesize
1.6MB

Download
memory/3460-37-0x0000000007ED0000-0x0000000007F7A000-memory.dmp

Filesize
680KB

Download
memory/3460-39-0x0000000007ED0000-0x0000000007F7A000-memory.dmp

Filesize
680KB

Download
memory/3460-40-0x0000000007ED0000-0x0000000007F7A000-memory.dmp

Filesize
680KB

Download
memory/4784-26-0x0000000001960000-0x0000000001974000-memory.dmp

Filesize
80KB

Download
memory/4784-25-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4784-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4784-22-0x00000000015E0000-0x00000000015F4000-memory.dmp

Filesize
80KB

Download
memory/4784-19-0x0000000001AA0000-0x0000000001DEA000-memory.dmp

Filesize
3.3MB

Download
memory/4784-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download