formbook | 60ca428c51bf843b6e087548b7acc72532f27d553751432a8da73d5f6705d6a0

General

Target

RFQ-56566666.exe
Size

301KB
MD5

5715ba8843db8b546c7b02c4779f0da5
SHA1

f4829f717b13ccad4bb5522f6bec19b8a6542556
SHA256

6932485133a755307c9a47908b52a34a7bbf5748564477b1e40ae4ef3d8b484c
SHA512

568a99807055746769e9a7f2a1b6951aacb2a845b562600b25f69367ca0c216c4c7112931aabeaceb8bfea46bec4cdbf6ef4e1586c2301896d3476889f27cb58
SSDEEP

6144:zqOiKE8RZK5rwXROf4GPR1L5+8hDiNf533mVk+s48L1A:NRZK5KOfb5Xben8Zs48L1A

Score

10^/10

formbook u2s7 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u2s7

Decoy

mixso.site

rlagnin.com

imini.top

grapejulius.com

pkcomputer.online

surepolka.com

petahansen.com

rodriguezlawncare.net

oscartheelearning.ninja

gcubaang.top

learnserver.site

weddinginthehamptons.com

doctorverma.online

epicsx.com

signmole.shop

storetrade.store

htlenderschampionship.com

tigerexch-official.net

momentum6labs.com

safetyconsultants.sydney

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/3064-8-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3064-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2904-18-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 3064	2808	RFQ-56566666.exe	30
PID 3064 set thread context of 1212	3064	aspnet_compiler.exe	21
PID 2904 set thread context of 1212	2904	cmstp.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	RFQ-56566666.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3064	aspnet_compiler.exe
3064	aspnet_compiler.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
3064	aspnet_compiler.exe
3064	aspnet_compiler.exe
3064	aspnet_compiler.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe
2904	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	aspnet_compiler.exe
Token: SeDebugPrivilege	2904	cmstp.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 2808 wrote to memory of 3064	2808	RFQ-56566666.exe	30
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2904	1212	Explorer.EXE	31
PID 2904 wrote to memory of 2076	2904	cmstp.exe	32
PID 2904 wrote to memory of 2076	2904	cmstp.exe	32
PID 2904 wrote to memory of 2076	2904	cmstp.exe	32
PID 2904 wrote to memory of 2076	2904	cmstp.exe	32
PID 2904 wrote to memory of 2076	2904	cmstp.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\RFQ-56566666.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ-56566666.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3064
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1212-14-0x0000000003AA0000-0x0000000003CA0000-memory.dmp

Filesize
2.0MB

Download
memory/1212-22-0x00000000074B0000-0x00000000075F4000-memory.dmp

Filesize
1.3MB

Download
memory/1212-15-0x00000000074B0000-0x00000000075F4000-memory.dmp

Filesize
1.3MB

Download
memory/2808-1-0x0000000000190000-0x00000000001DE000-memory.dmp

Filesize
312KB

Download
memory/2808-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-3-0x0000000000340000-0x0000000000352000-memory.dmp

Filesize
72KB

Download
memory/2808-4-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/2808-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2808-9-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-18-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/2904-17-0x00000000008E0000-0x00000000008F8000-memory.dmp

Filesize
96KB

Download
memory/2904-16-0x00000000008E0000-0x00000000008F8000-memory.dmp

Filesize
96KB

Download
memory/3064-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3064-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3064-13-0x0000000000290000-0x00000000002A5000-memory.dmp

Filesize
84KB

Download
memory/3064-10-0x0000000000990000-0x0000000000C93000-memory.dmp

Filesize
3.0MB

Download
memory/3064-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3064-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3064-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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