formbook | 331b0c93b00a65e96d830a0bd21582a7ab4aebceed4913bbb09130b85a8198e4

General

Target

Product Specifications xlsx.exe
Size

254KB
MD5

ac43233dd5fe6d55c112660dc700e564
SHA1

2f431f411c707593f2f4bd67da5db2e9a9593778
SHA256

d93182b7b2c8633aa7f379efdc80aa778ecc0b59a01929bb10a02cd8349354d2
SHA512

a3fd81e3d3e4e7271ef1536e8f0c10c945780a916e168bd19bd67e03dd2a326b5910bf528220aa24ccd8799e02b50fbc30e953b3cde2c3d8a2c0dffd0278c770
SSDEEP

6144:/Ya6lEiLxFG1cz5mqDoGPuduieEJE827qVkF28m4znusYtq4yC:/Y3EUxFzz57Dooudu9A5ko4zusYtFyC

Score

10^/10

formbook sn26 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sn26

Decoy

resenha10.bet

gulshan-rajput.com

xbus.tech

z813my.cfd

wlxzjlny.cfd

auntengotiempo.com

canada-reservation.com

thegiftcompany.shop

esthersilveirapropiedades.com

1wapws.top

ymjblnvo.cfd

termokimik.net

kushiro-artist-school.com

bmmboo.com

caceresconstructionservices.com

kentuckywalkabout.com

bringyourcart.com

miamiwinetour.com

bobcatsocial.site

thirdmind.network

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/2644-8-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2644-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2644-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2936-24-0x00000000000B0000-0x00000000000DF000-memory.dmp	formbook
behavioral1/memory/2936-26-0x00000000000B0000-0x00000000000DF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2592	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2060	Product Specifications xlsx.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2060 set thread context of 2644	2060	Product Specifications xlsx.exe	29
PID 2644 set thread context of 1268	2644	Product Specifications xlsx.exe	13
PID 2644 set thread context of 1268	2644	Product Specifications xlsx.exe	13
PID 2936 set thread context of 1268	2936	wininit.exe	13

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2644	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe
2936	wininit.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1268	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2060	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2644	Product Specifications xlsx.exe
2936	wininit.exe
2936	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	Product Specifications xlsx.exe
Token: SeDebugPrivilege	2936	wininit.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2644	2060	Product Specifications xlsx.exe	29
PID 2060 wrote to memory of 2644	2060	Product Specifications xlsx.exe	29
PID 2060 wrote to memory of 2644	2060	Product Specifications xlsx.exe	29
PID 2060 wrote to memory of 2644	2060	Product Specifications xlsx.exe	29
PID 2060 wrote to memory of 2644	2060	Product Specifications xlsx.exe	29
PID 1268 wrote to memory of 2936	1268	Explorer.EXE	30
PID 1268 wrote to memory of 2936	1268	Explorer.EXE	30
PID 1268 wrote to memory of 2936	1268	Explorer.EXE	30
PID 1268 wrote to memory of 2936	1268	Explorer.EXE	30
PID 2936 wrote to memory of 2592	2936	wininit.exe	31
PID 2936 wrote to memory of 2592	2936	wininit.exe	31
PID 2936 wrote to memory of 2592	2936	wininit.exe	31
PID 2936 wrote to memory of 2592	2936	wininit.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\Product Specifications xlsx.exe
  "C:\Users\Admin\AppData\Local\Temp\Product Specifications xlsx.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Users\Admin\AppData\Local\Temp\Product Specifications xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\Product Specifications xlsx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2644
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2936
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Product Specifications xlsx.exe"
    3⤵
    - Deletes itself
    PID:2592

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nso343C.tmp\hutskogno.dll

Filesize
46KB

MD5
588cb1a8e7a30760b06e0d17e1d530da

SHA1
81c3b8ad80b3eab1cca85efaba50cc06f4fea922

SHA256
0e48e95e34121c2872695725e6bc3a7b266112437733fe9d7f290e72d201f97c

SHA512
bb3e2bd8a7f9ee3693c5d777352eff23c2c4aaf61adf8954166f6b05d163307c55a33ae06d423c569485b92e51336c09db62c2393d131ab40b1f21663dc89644

Download Submit
\Users\Admin\AppData\Local\Temp\nso343C.tmp\hutskogno.dll

Filesize
46KB

MD5
588cb1a8e7a30760b06e0d17e1d530da

SHA1
81c3b8ad80b3eab1cca85efaba50cc06f4fea922

SHA256
0e48e95e34121c2872695725e6bc3a7b266112437733fe9d7f290e72d201f97c

SHA512
bb3e2bd8a7f9ee3693c5d777352eff23c2c4aaf61adf8954166f6b05d163307c55a33ae06d423c569485b92e51336c09db62c2393d131ab40b1f21663dc89644

Download Submit
memory/1268-18-0x0000000002A70000-0x0000000002B70000-memory.dmp

Filesize
1024KB

Download
memory/1268-33-0x0000000003D50000-0x0000000003DF3000-memory.dmp

Filesize
652KB

Download
memory/1268-31-0x0000000003D50000-0x0000000003DF3000-memory.dmp

Filesize
652KB

Download
memory/1268-12-0x0000000003E50000-0x0000000004050000-memory.dmp

Filesize
2.0MB

Download
memory/1268-30-0x0000000003D50000-0x0000000003DF3000-memory.dmp

Filesize
652KB

Download
memory/1268-27-0x0000000007450000-0x0000000007548000-memory.dmp

Filesize
992KB

Download
memory/1268-14-0x0000000004EF0000-0x0000000005046000-memory.dmp

Filesize
1.3MB

Download
memory/1268-19-0x0000000007450000-0x0000000007548000-memory.dmp

Filesize
992KB

Download
memory/2060-7-0x00000000004C0000-0x00000000004C2000-memory.dmp

Filesize
8KB

Download
memory/2644-17-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/2644-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2644-13-0x00000000002C0000-0x00000000002D5000-memory.dmp

Filesize
84KB

Download
memory/2644-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2644-9-0x0000000000920000-0x0000000000C23000-memory.dmp

Filesize
3.0MB

Download
memory/2644-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2936-21-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/2936-23-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/2936-24-0x00000000000B0000-0x00000000000DF000-memory.dmp

Filesize
188KB

Download
memory/2936-25-0x0000000001F10000-0x0000000002213000-memory.dmp

Filesize
3.0MB

Download
memory/2936-26-0x00000000000B0000-0x00000000000DF000-memory.dmp

Filesize
188KB

Download
memory/2936-29-0x00000000003F0000-0x0000000000484000-memory.dmp

Filesize
592KB

Download

Analysis

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