formbook | 404f0f676d94ffdc3cc0b4422a34a5aee31d06c815253ba0e7aeb0fed3905b9c

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
22-08-2023 07:36

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General

Target

PO-384728493049.rtf
Size

88KB
MD5

5292d77a5796360358f012d31f4cd438
SHA1

ceb7009b833a4829f9017636445a07ca201a9db4
SHA256

404f0f676d94ffdc3cc0b4422a34a5aee31d06c815253ba0e7aeb0fed3905b9c
SHA512

d42e1a014c005935b79de13b975a2e840ef100abfc054b08b547398d3ba99834c6f2074d02b3570da4d2b2a01fbe52dda1ce955c66f0aa2bf20eccc62e03b4f6
SSDEEP

768:kwAbZSibMX9gRWjQOX1eDp9haTtsZ+Tnkfas:kwAlRxu1edzaT+Q1s

Score

10^/10

formbook oy30 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

oy30

Decoy

rfc234.top

danielcavalari.com

elperegrinocabo.com

aryor.info

surelistening.com

premium-numero-telf.buzz

orlynyml.click

tennislovers-ro.com

holdmytracker.com

eewapay.com

jaimesinstallglass.com

damactrade.net

swapspecialities.com

perfumesrffd.today

salesfactory.pro

supportive-solutions.com

naiol.com

khoyr.com

kalendeargpt44.com

web-tech-spb.store

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral1/memory/2456-88-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2456-93-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2456-97-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2964-105-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook
behavioral1/memory/2964-107-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2904	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1016	obimgf6896.exe
2456	obimgf6896.exe

Loads dropped DLL 1 IoCs

pid	Process
2904	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1016 set thread context of 2456	1016	obimgf6896.exe	35
PID 2456 set thread context of 1252	2456	obimgf6896.exe	17
PID 2456 set thread context of 1252	2456	obimgf6896.exe	17
PID 2964 set thread context of 1252	2964	rundll32.exe	17

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2904	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2284	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2456	obimgf6896.exe
2456	obimgf6896.exe
2456	obimgf6896.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe
2964	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1252	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2456	obimgf6896.exe
2456	obimgf6896.exe
2456	obimgf6896.exe
2456	obimgf6896.exe
2964	rundll32.exe
2964	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2456	obimgf6896.exe
Token: SeDebugPrivilege	2964	rundll32.exe
Token: SeShutdownPrivilege	1252	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2284	WINWORD.EXE
2284	WINWORD.EXE

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 1016	2904	EQNEDT32.EXE	29
PID 2904 wrote to memory of 1016	2904	EQNEDT32.EXE	29
PID 2904 wrote to memory of 1016	2904	EQNEDT32.EXE	29
PID 2904 wrote to memory of 1016	2904	EQNEDT32.EXE	29
PID 2284 wrote to memory of 2684	2284	WINWORD.EXE	34
PID 2284 wrote to memory of 2684	2284	WINWORD.EXE	34
PID 2284 wrote to memory of 2684	2284	WINWORD.EXE	34
PID 2284 wrote to memory of 2684	2284	WINWORD.EXE	34
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1016 wrote to memory of 2456	1016	obimgf6896.exe	35
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 1252 wrote to memory of 2964	1252	Explorer.EXE	36
PID 2964 wrote to memory of 1360	2964	rundll32.exe	37
PID 2964 wrote to memory of 1360	2964	rundll32.exe	37
PID 2964 wrote to memory of 1360	2964	rundll32.exe	37
PID 2964 wrote to memory of 1360	2964	rundll32.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
  "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PO-384728493049.rtf"
  2⤵
  - Drops file in Windows directory
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\splwow64.exe
    C:\Windows\splwow64.exe 12288
    3⤵
    PID:2684
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Roaming\obimgf6896.exe"
    3⤵
    PID:1360

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Roaming\obimgf6896.exe
  "C:\Users\Admin\AppData\Roaming\obimgf6896.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1016
- - C:\Users\Admin\AppData\Roaming\obimgf6896.exe
    "C:\Users\Admin\AppData\Roaming\obimgf6896.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
20KB

MD5
d4aae4b5caaf1eb2308642846d34a9dc

SHA1
939690e9050f65045af845b1f87738abf798150e

SHA256
94383eec7a3d60a1c665788da9273f34ded1e286e4d0f3d9693a6690e2a05b57

SHA512
e201d5820ce74fd9003c48e399db7d23b434b864b4efc216eab3d43f9ba6c30d9706aea92e2eca6a347def70723e5f464c5162870c71b88f3c1b19b77ca8664a

Download Submit
C:\Users\Admin\AppData\Roaming\obimgf6896.exe

Filesize
769KB

MD5
06d65cf5d9fcf94add6017bde7845761

SHA1
13d3d25e866db4ec3a9cdf93409d77faa9c66c73

SHA256
eac185bd1520eb8f6b6ff62d571549c5d073cd120e22119499c26e8515f0352e

SHA512
55e38d24c973b962a446aadc3493dba830ae757233958ce004d4e5f7fb96f6a0ec5611af18bbd195b2f8e371b6550e247d8798d03ac6f77da5b8ad2fd1a3f534

Download Submit
C:\Users\Admin\AppData\Roaming\obimgf6896.exe

Filesize
769KB

MD5
06d65cf5d9fcf94add6017bde7845761

SHA1
13d3d25e866db4ec3a9cdf93409d77faa9c66c73

SHA256
eac185bd1520eb8f6b6ff62d571549c5d073cd120e22119499c26e8515f0352e

SHA512
55e38d24c973b962a446aadc3493dba830ae757233958ce004d4e5f7fb96f6a0ec5611af18bbd195b2f8e371b6550e247d8798d03ac6f77da5b8ad2fd1a3f534

Download Submit
C:\Users\Admin\AppData\Roaming\obimgf6896.exe

Filesize
769KB

MD5
06d65cf5d9fcf94add6017bde7845761

SHA1
13d3d25e866db4ec3a9cdf93409d77faa9c66c73

SHA256
eac185bd1520eb8f6b6ff62d571549c5d073cd120e22119499c26e8515f0352e

SHA512
55e38d24c973b962a446aadc3493dba830ae757233958ce004d4e5f7fb96f6a0ec5611af18bbd195b2f8e371b6550e247d8798d03ac6f77da5b8ad2fd1a3f534

Download Submit
C:\Users\Admin\AppData\Roaming\obimgf6896.exe

Filesize
769KB

MD5
06d65cf5d9fcf94add6017bde7845761

SHA1
13d3d25e866db4ec3a9cdf93409d77faa9c66c73

SHA256
eac185bd1520eb8f6b6ff62d571549c5d073cd120e22119499c26e8515f0352e

SHA512
55e38d24c973b962a446aadc3493dba830ae757233958ce004d4e5f7fb96f6a0ec5611af18bbd195b2f8e371b6550e247d8798d03ac6f77da5b8ad2fd1a3f534

Download Submit
\Users\Admin\AppData\Roaming\obimgf6896.exe

Filesize
769KB

MD5
06d65cf5d9fcf94add6017bde7845761

SHA1
13d3d25e866db4ec3a9cdf93409d77faa9c66c73

SHA256
eac185bd1520eb8f6b6ff62d571549c5d073cd120e22119499c26e8515f0352e

SHA512
55e38d24c973b962a446aadc3493dba830ae757233958ce004d4e5f7fb96f6a0ec5611af18bbd195b2f8e371b6550e247d8798d03ac6f77da5b8ad2fd1a3f534

Download Submit
memory/1016-71-0x0000000000440000-0x000000000045C000-memory.dmp

Filesize
112KB

Download
memory/1016-78-0x000000006B460000-0x000000006BB4E000-memory.dmp

Filesize
6.9MB

Download
memory/1016-69-0x0000000000810000-0x00000000008D6000-memory.dmp

Filesize
792KB

Download
memory/1016-70-0x0000000004F20000-0x0000000004F60000-memory.dmp

Filesize
256KB

Download
memory/1016-90-0x000000006B460000-0x000000006BB4E000-memory.dmp

Filesize
6.9MB

Download
memory/1016-82-0x0000000004920000-0x000000000498E000-memory.dmp

Filesize
440KB

Download
memory/1016-81-0x0000000000470000-0x000000000047E000-memory.dmp

Filesize
56KB

Download
memory/1016-68-0x000000006B460000-0x000000006BB4E000-memory.dmp

Filesize
6.9MB

Download
memory/1016-79-0x0000000004F20000-0x0000000004F60000-memory.dmp

Filesize
256KB

Download
memory/1252-113-0x0000000006650000-0x0000000006722000-memory.dmp

Filesize
840KB

Download
memory/1252-114-0x0000000006650000-0x0000000006722000-memory.dmp

Filesize
840KB

Download
memory/1252-108-0x0000000006CA0000-0x0000000006DC3000-memory.dmp

Filesize
1.1MB

Download
memory/1252-102-0x0000000006AF0000-0x0000000006C98000-memory.dmp

Filesize
1.7MB

Download
memory/1252-99-0x0000000006CA0000-0x0000000006DC3000-memory.dmp

Filesize
1.1MB

Download
memory/1252-95-0x0000000006AF0000-0x0000000006C98000-memory.dmp

Filesize
1.7MB

Download
memory/1252-116-0x0000000006650000-0x0000000006722000-memory.dmp

Filesize
840KB

Download
memory/2284-76-0x000000002F080000-0x000000002F1DD000-memory.dmp

Filesize
1.4MB

Download
memory/2284-77-0x00000000712AD000-0x00000000712B8000-memory.dmp

Filesize
44KB

Download
memory/2284-53-0x000000002F080000-0x000000002F1DD000-memory.dmp

Filesize
1.4MB

Download
memory/2284-55-0x00000000712AD000-0x00000000712B8000-memory.dmp

Filesize
44KB

Download
memory/2284-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2284-136-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2284-137-0x00000000712AD000-0x00000000712B8000-memory.dmp

Filesize
44KB

Download
memory/2456-86-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2456-98-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/2456-97-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2456-85-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2456-91-0x0000000000A70000-0x0000000000D73000-memory.dmp

Filesize
3.0MB

Download
memory/2456-88-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2456-94-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/2456-93-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2456-83-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2964-104-0x00000000007D0000-0x00000000007DE000-memory.dmp

Filesize
56KB

Download
memory/2964-110-0x0000000001F60000-0x0000000001FF4000-memory.dmp

Filesize
592KB

Download
memory/2964-107-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2964-106-0x0000000002050000-0x0000000002353000-memory.dmp

Filesize
3.0MB

Download
memory/2964-105-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2964-101-0x00000000007D0000-0x00000000007DE000-memory.dmp

Filesize
56KB

Download
memory/2964-100-0x00000000007D0000-0x00000000007DE000-memory.dmp

Filesize
56KB

Download