formbook | 99879f576330744c038ac59de64f244284adb5329a1047f8e3313082ebd0a2c6

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2023, 12:14

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General

Target

z79Payment_Invoice.exe
Size

279KB
MD5

ab6b2dcefead1e07ced28e7ba26116f2
SHA1

dd97e6eff8cd76a423dd7dc19345924ccc532d23
SHA256

99879f576330744c038ac59de64f244284adb5329a1047f8e3313082ebd0a2c6
SHA512

267747bdc01d5207a18b5b1d0722af2342cf0550e8b54aa79f5cfdecefe7755eefd4e0d23df3037336228374eb10e6957438b100b77310b39bc1369cb660853c
SSDEEP

6144:mYa6ySxvmDOC0ThsaSCvAGVwtQVOStS//bqZ3vFaoWc:mYfp1IebV6Q4SakTWc

Score

10^/10

formbook nu06 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

nu06

Decoy

cutmentor.net

alexwright.xyz

gymbastic.com

creperie-lalios.com

equipmentblock.com

zwangerschapvanweektotweek.net

asimulationcompany.com

g9technoinnovation.com

bestbirdies.xyz

addhair.online

get-breakfastburns.com

aex-studentki.guru

jhpx888.com

gemologic.dev

thegreencarshop.co.uk

alessandromargonari.com

cosmosynz.click

letstalkreparation.com

bka-i.com

hervelegerdressshop.co.uk

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2444-142-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2444-150-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/212-152-0x0000000001200000-0x000000000122F000-memory.dmp	formbook
behavioral2/memory/212-154-0x0000000001200000-0x000000000122F000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
848	hchnl.exe
2444	hchnl.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 848 set thread context of 2444	848	hchnl.exe	87
PID 2444 set thread context of 2616	2444	hchnl.exe	47
PID 212 set thread context of 2616	212	cmstp.exe	47

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
2444	hchnl.exe
2444	hchnl.exe
2444	hchnl.exe
2444	hchnl.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe
212	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2616	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
848	hchnl.exe
2444	hchnl.exe
2444	hchnl.exe
2444	hchnl.exe
212	cmstp.exe
212	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2444	hchnl.exe
Token: SeDebugPrivilege	212	cmstp.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 848	4516	z79Payment_Invoice.exe	86
PID 4516 wrote to memory of 848	4516	z79Payment_Invoice.exe	86
PID 4516 wrote to memory of 848	4516	z79Payment_Invoice.exe	86
PID 848 wrote to memory of 2444	848	hchnl.exe	87
PID 848 wrote to memory of 2444	848	hchnl.exe	87
PID 848 wrote to memory of 2444	848	hchnl.exe	87
PID 848 wrote to memory of 2444	848	hchnl.exe	87
PID 2616 wrote to memory of 212	2616	Explorer.EXE	88
PID 2616 wrote to memory of 212	2616	Explorer.EXE	88
PID 2616 wrote to memory of 212	2616	Explorer.EXE	88
PID 212 wrote to memory of 1748	212	cmstp.exe	91
PID 212 wrote to memory of 1748	212	cmstp.exe	91
PID 212 wrote to memory of 1748	212	cmstp.exe	91

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\z79Payment_Invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\z79Payment_Invoice.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4516
- - C:\Users\Admin\AppData\Local\Temp\hchnl.exe
    "C:\Users\Admin\AppData\Local\Temp\hchnl.exe" C:\Users\Admin\AppData\Local\Temp\tjvca.en
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:848
  - - C:\Users\Admin\AppData\Local\Temp\hchnl.exe
      "C:\Users\Admin\AppData\Local\Temp\hchnl.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2444
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:212
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\hchnl.exe"
    3⤵
    PID:1748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\cgtqaycz.clk

Filesize
205KB

MD5
758d252482cb5e9d0fabdd1a823693ce

SHA1
4d400d5aeb7cf0d51783eb5ca28148cb59dec62e

SHA256
a73214dc5d911d5c63b02452e901960be43b211fac89b118fb384a6231e8f592

SHA512
9a555a01683e61e4c0ecac509a0ea4f01e0a7b270411687db0ef482d45f78f291ecdfb16da1a1e0ebac0734062015e992e4617e7c186748473ed1c672f3b6d3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\hchnl.exe

Filesize
58KB

MD5
b452944769013ab23fefa20383f5d5e9

SHA1
13b1850c2538925c2b63dcb332411f054a2144a3

SHA256
c9749bbe3d3516f7d4c62212fdd943ec620c212301e224425b1e783d97e988a3

SHA512
74ca7637c18ca5230d345d4a5ed4f24e2da85354c3d938447af095c625ceb51962ea55d3e261f320603918f3c1b648c257a5920b8a8a9ea793d759503e0a2929

Download Submit
C:\Users\Admin\AppData\Local\Temp\hchnl.exe

Filesize
58KB

MD5
b452944769013ab23fefa20383f5d5e9

SHA1
13b1850c2538925c2b63dcb332411f054a2144a3

SHA256
c9749bbe3d3516f7d4c62212fdd943ec620c212301e224425b1e783d97e988a3

SHA512
74ca7637c18ca5230d345d4a5ed4f24e2da85354c3d938447af095c625ceb51962ea55d3e261f320603918f3c1b648c257a5920b8a8a9ea793d759503e0a2929

Download Submit
C:\Users\Admin\AppData\Local\Temp\hchnl.exe

Filesize
58KB

MD5
b452944769013ab23fefa20383f5d5e9

SHA1
13b1850c2538925c2b63dcb332411f054a2144a3

SHA256
c9749bbe3d3516f7d4c62212fdd943ec620c212301e224425b1e783d97e988a3

SHA512
74ca7637c18ca5230d345d4a5ed4f24e2da85354c3d938447af095c625ceb51962ea55d3e261f320603918f3c1b648c257a5920b8a8a9ea793d759503e0a2929

Download Submit
C:\Users\Admin\AppData\Local\Temp\tjvca.en

Filesize
5KB

MD5
346a4e38ddc6825496883e1b8a10f86e

SHA1
034628b066c6d47b4b2b8ee5bc06243f27429f28

SHA256
4e0a805ef4afbac34de98431a3e978f1bed993736f63e946eb546093c37a4b3e

SHA512
d9bd7d23551adda608f7d925426956be77af9ef4fadb34c1ca87ccd50352330c8a55d86606038820d13f4f44e05db731ce714aa9dc193b985461cf9b52e96323

Download Submit
memory/212-151-0x0000000000EC0000-0x0000000000ED6000-memory.dmp

Filesize
88KB

Download
memory/212-156-0x0000000002F80000-0x0000000003013000-memory.dmp

Filesize
588KB

Download
memory/212-154-0x0000000001200000-0x000000000122F000-memory.dmp

Filesize
188KB

Download
memory/212-153-0x0000000003140000-0x000000000348A000-memory.dmp

Filesize
3.3MB

Download
memory/212-149-0x0000000000EC0000-0x0000000000ED6000-memory.dmp

Filesize
88KB

Download
memory/212-152-0x0000000001200000-0x000000000122F000-memory.dmp

Filesize
188KB

Download
memory/2444-142-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2444-150-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2444-147-0x00000000012E0000-0x00000000012F4000-memory.dmp

Filesize
80KB

Download
memory/2444-146-0x0000000001350000-0x000000000169A000-memory.dmp

Filesize
3.3MB

Download
memory/2616-148-0x0000000008A80000-0x0000000008C0B000-memory.dmp

Filesize
1.5MB

Download
memory/2616-157-0x0000000002EB0000-0x0000000002F87000-memory.dmp

Filesize
860KB

Download
memory/2616-158-0x0000000002EB0000-0x0000000002F87000-memory.dmp

Filesize
860KB

Download
memory/2616-160-0x0000000002EB0000-0x0000000002F87000-memory.dmp

Filesize
860KB

Download