formbook | 1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80

General

Target

1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe
Size

328KB
MD5

59ec68c614cbd08f061b98ee2f7558b6
SHA1

518e36c73b44331e89a74c651ddf64e9ad79ee10
SHA256

1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80
SHA512

9e7efd81d2cd1ffcc35d76f33b24f96ebfe459f9768ff29fce9d56877471dff8ef1dfe469b3ff045eb913cebc30a8b44d0c3cbe1b46f6fc7e7eaa5c853eea99b
SSDEEP

6144:ptxBKhzEHZ6pqRMVr5PdD1IQnAPJrueL9KEzbIgsfd+O2hht9lKSYS:ptLKhIZ60+VrVR/UJrueL9PbcV8jt9lH

Score

10^/10

formbook 4u5a rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

4u5a

Decoy

Y9HWoINcPu0r7SSSKt4FCmk7

G/E64auYdhRQM4wZW2bcOaY=

bL57APty/StRpW49a+EdxA==

TppryJ0SoslHe8gJFVc=

HXxDShYIEcUJDahdv2nvl5Hlbp4=

EKaq5c6w0nV3WWlEqM4Www==

VM+YjE8XS1OLcH1roYF4zA==

OwK0wxmBGnq2Fg==

B1zy4bulyfY9tj9DK2eIkeYArpTt

Avj5JeA8m9girqfQ4+cZxA==

AOY4dmDFkCdX8HUJMw==

5cQUw3pPMYr07V8=

P7ZsN4/zt63AEw==

FYyVCOpB8Vl//kSkDLPo91Yy

jxwZTBp+5gcsccPxDF+K4bDG2Rpp0A==

iGx9AO58DRhZbXX9

prwVyLkAtlhSU6irmansg8wArpTt

uqa8ZPl+FFObOkdFNg==

tL4OhF22EDaEOkdFNg==

6exH76Z9o7eu/n86vgPE

Signatures

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exeRegSvcs.exeexplorer.exe

description	pid	process	target process
PID 420 set thread context of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 1696 set thread context of 772	1696	RegSvcs.exe	Explorer.EXE
PID 4232 set thread context of 772	4232	explorer.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	explorer.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

RegSvcs.exeexplorer.exe

pid	process
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
1696	RegSvcs.exe
4232	explorer.exe
4232	explorer.exe
4232	explorer.exe
4232	explorer.exe
4232	explorer.exe
4232	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exeexplorer.exe

pid process

1696 RegSvcs.exe
1696 RegSvcs.exe
1696 RegSvcs.exe
4232 explorer.exe
4232 explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exeRegSvcs.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe
Token: SeDebugPrivilege	1696	RegSvcs.exe
Token: SeDebugPrivilege	4232	explorer.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exeExplorer.EXE

description	pid	process	target process
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 420 wrote to memory of 1696	420	1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe	RegSvcs.exe
PID 772 wrote to memory of 4232	772	Explorer.EXE	explorer.exe
PID 772 wrote to memory of 4232	772	Explorer.EXE	explorer.exe
PID 772 wrote to memory of 4232	772	Explorer.EXE	explorer.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:772
- C:\Users\Admin\AppData\Local\Temp\1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe
  "C:\Users\Admin\AppData\Local\Temp\1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:420
- - 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
    PID:1696
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:4232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/420-133-0x0000000009460000-0x00000000094FC000-memory.dmp

Filesize
624KB

Download
memory/420-132-0x00000000002E0000-0x000000000033A000-memory.dmp

Filesize
360KB

Download
memory/772-142-0x0000000008250000-0x0000000008305000-memory.dmp

Filesize
724KB

Download
memory/772-153-0x0000000008310000-0x0000000008476000-memory.dmp

Filesize
1.4MB

Download
memory/772-151-0x0000000008310000-0x0000000008476000-memory.dmp

Filesize
1.4MB

Download
memory/772-149-0x0000000008250000-0x0000000008305000-memory.dmp

Filesize
724KB

Download
memory/1696-138-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1696-137-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1696-140-0x0000000001090000-0x00000000013DA000-memory.dmp

Filesize
3.3MB

Download
memory/1696-134-0x0000000000000000-mapping.dmp

Download
memory/1696-144-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1696-145-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1696-135-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1696-141-0x0000000000B00000-0x0000000000B10000-memory.dmp

Filesize
64KB

Download
memory/4232-147-0x0000000000B00000-0x0000000000B2D000-memory.dmp

Filesize
180KB

Download
memory/4232-148-0x0000000002B30000-0x0000000002E7A000-memory.dmp

Filesize
3.3MB

Download
memory/4232-150-0x0000000002890000-0x000000000291F000-memory.dmp

Filesize
572KB

Download
memory/4232-146-0x0000000000260000-0x0000000000693000-memory.dmp

Filesize
4.2MB

Download
memory/4232-152-0x0000000000B00000-0x0000000000B2D000-memory.dmp

Filesize
180KB

Download
memory/4232-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads