formbook | 9fd8b0f6c9167d26074c6b95b7cab23af2ac512f4dcdd8486309f489e8953e8f

Analysis

max time kernel
152s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 06:56

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General

Target

img1910202258454857453739.exe
Size

279KB
MD5

ea4887c59777688d1eefd6611710224d
SHA1

b4fd3fc6792f3d724bc17b235a14b459de0fb85a
SHA256

9fd8b0f6c9167d26074c6b95b7cab23af2ac512f4dcdd8486309f489e8953e8f
SHA512

081050a2aa2ae52d51ccff4bf7eb289998a5bf660df45e6fdd7c075383ecdd575ae7fc1c31b7beecbef745d4cbf974bb69977da9f0b7f17a38af6046bd356059
SSDEEP

6144:81bn6zIMq4u2CorAIVvAGIVoozfRg4KAil0jRdEcc3imi44z4+uemsARMYg:k6zRqerAEvXgLRwIjIy30+jmsAWYg

Score

10^/10

formbook obc0 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

obc0

Decoy

A2gNIt4ZLE2WSRNqwwwpsBTT

KLiJs2j/oYJGXw==

GJ5AX02Bzirgole5H/xkbHxxxA==

nhGtQ1jESNk=

M/qrQ6/c8BjOhjUShQwpsBTT

hhjW6ZLD3W5/YSvc/w==

ck6CCdkGHGLCJeYHfoHi2jLrLkMI

M7hs+yxb421IZmQ4g0Y=

P/gftL3tjcgy1JT+Z0g=

v5xRZ1+PJTeGLQRDdVE=

IpZE4CpJa7qSObgbNNO0sAjey1PTVw==

CuMGreIQqVLMeVneRCnVh9LE

5Ig0zy1q8hFYwLGX9w==

wYxI1zZk7juqENdahFM=

8W4jMcvt8hKaBK3UNzfVh9LE

xVQHn+gbtydXi1mU

V9Z5FkCyPN0=

B8RxDECyPN0=

6u4Rp7nkvaoVsRo=

Efs21e4nxg8bux4=

Signatures

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

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 4732	2524	img1910202258454857453739.exe	82
PID 4732 set thread context of 968	4732	Regsvcs.exe	36
PID 4732 set thread context of 968	4732	Regsvcs.exe	36
PID 5100 set thread context of 968	5100	systray.exe	36

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
968	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
4732	Regsvcs.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe
5100	systray.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4732	Regsvcs.exe
Token: SeDebugPrivilege	5100	systray.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 2524 wrote to memory of 4732	2524	img1910202258454857453739.exe	82
PID 4732 wrote to memory of 5100	4732	Regsvcs.exe	84
PID 4732 wrote to memory of 5100	4732	Regsvcs.exe	84
PID 4732 wrote to memory of 5100	4732	Regsvcs.exe	84
PID 5100 wrote to memory of 3152	5100	systray.exe	93
PID 5100 wrote to memory of 3152	5100	systray.exe	93
PID 5100 wrote to memory of 3152	5100	systray.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:968
- C:\Users\Admin\AppData\Local\Temp\img1910202258454857453739.exe
  "C:\Users\Admin\AppData\Local\Temp\img1910202258454857453739.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4732
  - - C:\Windows\SysWOW64\systray.exe
      "C:\Windows\SysWOW64\systray.exe"
      4⤵
      Suspicious use of SetThreadContext
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:5100
    - - C:\Program Files\Mozilla Firefox\Firefox.exe
        
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        5⤵
        
        PID:3152
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/968-142-0x0000000002840000-0x0000000002934000-memory.dmp

Filesize
976KB

Download
memory/968-158-0x0000000007280000-0x0000000007343000-memory.dmp

Filesize
780KB

Download
memory/968-156-0x0000000007280000-0x0000000007343000-memory.dmp

Filesize
780KB

Download
memory/968-148-0x0000000007D30000-0x0000000007E90000-memory.dmp

Filesize
1.4MB

Download
memory/968-145-0x0000000002840000-0x0000000002934000-memory.dmp

Filesize
976KB

Download
memory/2524-136-0x00007FFE992A0000-0x00007FFE99D61000-memory.dmp

Filesize
10.8MB

Download
memory/2524-132-0x0000000000700000-0x000000000074A000-memory.dmp

Filesize
296KB

Download
memory/2524-143-0x00007FFE992A0000-0x00007FFE99D61000-memory.dmp

Filesize
10.8MB

Download
memory/4732-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4732-151-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4732-140-0x0000000000DF0000-0x000000000113A000-memory.dmp

Filesize
3.3MB

Download
memory/4732-144-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4732-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4732-147-0x0000000001160000-0x0000000001170000-memory.dmp

Filesize
64KB

Download
memory/4732-137-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4732-133-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4732-150-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4732-141-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

Filesize
64KB

Download
memory/5100-153-0x00000000005C0000-0x00000000005ED000-memory.dmp

Filesize
180KB

Download
memory/5100-154-0x0000000002740000-0x0000000002A8A000-memory.dmp

Filesize
3.3MB

Download
memory/5100-155-0x00000000024E0000-0x000000000256F000-memory.dmp

Filesize
572KB

Download
memory/5100-152-0x00000000009E0000-0x00000000009E6000-memory.dmp

Filesize
24KB

Download
memory/5100-157-0x00000000005C0000-0x00000000005ED000-memory.dmp

Filesize
180KB

Download