formbook | 7afd3634a44e0fac1006ed44b66e67fc4c58704cfcfcbe2266c9f52a3fcccbd6

General

Target

rrr.exe
Size

298KB
MD5

e29af60c4ef79bee0553d2fb6e5e45bf
SHA1

621afdcdfdba54a39c17ff294879dcfdb944593e
SHA256

7afd3634a44e0fac1006ed44b66e67fc4c58704cfcfcbe2266c9f52a3fcccbd6
SHA512

6b1e06f84e16670c444adc4f465d0aab9339dd72f3dca95bed3484ad51556a9879f2ccf87146294011b723b10996fe47ff34a866426037f89c98b1100a0ed611

Score

10^/10

formbook neshta s3s3 persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

s3s3

Decoy

tvielotus.com

teesta.xyz

talentrecruitor.com

pamaungipb.com

xn--90ahkh6a6b8b.site

910carolina.com

toyotaecoyouth-dev.com

invetnables.com

gdexc.com

ssw168.com

householdmould.com

mqttradar.xyz

t333c.com

thepausestudio.com

evershedsutherlands.com

asbdataplus.com

preddylilthingz.com

jepwu.com

tvlido.com

artovus.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

rrr.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" rrr.exe
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	rrr.exe

Formbook Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2016-65-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2016-66-0x000000000041F110-mapping.dmp	formbook
behavioral1/memory/2016-72-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/596-75-0x00000000000B0000-0x00000000000DF000-memory.dmp	formbook
behavioral1/memory/596-80-0x00000000000B0000-0x00000000000DF000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

Processes:

rrr.exe

pid process

908 rrr.exe
Loads dropped DLL 2 IoCs

Processes:

rrr.exe

pid process

972 rrr.exe
972 rrr.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
908	rrr.exe

pid	process
972	rrr.exe
972	rrr.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

rrr.execvtres.execolorcpl.exe

description	pid	process	target process
PID 908 set thread context of 2016	908	rrr.exe	cvtres.exe
PID 2016 set thread context of 1380	2016	cvtres.exe	Explorer.EXE
PID 596 set thread context of 1380	596	colorcpl.exe	Explorer.EXE

Drops file in Program Files directory 64 IoCs

Processes:

rrr.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.exe	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	rrr.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	rrr.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	rrr.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	rrr.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	rrr.exe

Drops file in Windows directory 1 IoCs

Processes:

rrr.exe

description ioc process

File opened for modification C:\Windows\svchost.com rrr.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

rrr.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" rrr.exe

description	ioc	process
File opened for modification	C:\Windows\svchost.com	rrr.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	rrr.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

cvtres.execolorcpl.exe

pid	process
2016	cvtres.exe
2016	cvtres.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe
596	colorcpl.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

cvtres.execolorcpl.exe

pid process

2016 cvtres.exe
2016 cvtres.exe
2016 cvtres.exe
596 colorcpl.exe
596 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

cvtres.execolorcpl.exe

description pid process

Token: SeDebugPrivilege 2016 cvtres.exe
Token: SeDebugPrivilege 596 colorcpl.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2016	cvtres.exe
Token: SeDebugPrivilege	596	colorcpl.exe

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

rrr.exerrr.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 972 wrote to memory of 908	972	rrr.exe	rrr.exe
PID 972 wrote to memory of 908	972	rrr.exe	rrr.exe
PID 972 wrote to memory of 908	972	rrr.exe	rrr.exe
PID 972 wrote to memory of 908	972	rrr.exe	rrr.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 908 wrote to memory of 2016	908	rrr.exe	cvtres.exe
PID 1380 wrote to memory of 596	1380	Explorer.EXE	colorcpl.exe
PID 1380 wrote to memory of 596	1380	Explorer.EXE	colorcpl.exe
PID 1380 wrote to memory of 596	1380	Explorer.EXE	colorcpl.exe
PID 1380 wrote to memory of 596	1380	Explorer.EXE	colorcpl.exe
PID 596 wrote to memory of 524	596	colorcpl.exe	cmd.exe
PID 596 wrote to memory of 524	596	colorcpl.exe	cmd.exe
PID 596 wrote to memory of 524	596	colorcpl.exe	cmd.exe
PID 596 wrote to memory of 524	596	colorcpl.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1380

C:\Users\Admin\AppData\Local\Temp\rrr.exe
"C:\Users\Admin\AppData\Local\Temp\rrr.exe"
2⤵
- Modifies system executable filetype association
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:972

C:\Users\Admin\AppData\Local\Temp\3582-490\rrr.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\rrr.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2016

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:596

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
PID:524

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\rrr.exe
Filesize
257KB

MD5
c26f62be6304e0e2c12dba146a372c21

SHA1
2497d5377572816d9490f074949efde8e65f49f4

SHA256
45b1927934099ea95d315972f7f128ba3af4a64aa483d964f94c599e8e16f094

SHA512
365c33622bb675109dbf9093b0d2a5d3635c8cf9591ff3af6d4be3690499e40252b1ec3712d4031424cf2df8958b197566e995f58d511b16a301b28bdf9c5718

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\rrr.exe
Filesize
257KB

MD5
c26f62be6304e0e2c12dba146a372c21

SHA1
2497d5377572816d9490f074949efde8e65f49f4

SHA256
45b1927934099ea95d315972f7f128ba3af4a64aa483d964f94c599e8e16f094

SHA512
365c33622bb675109dbf9093b0d2a5d3635c8cf9591ff3af6d4be3690499e40252b1ec3712d4031424cf2df8958b197566e995f58d511b16a301b28bdf9c5718

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\rrr.exe
Filesize
257KB

MD5
c26f62be6304e0e2c12dba146a372c21

SHA1
2497d5377572816d9490f074949efde8e65f49f4

SHA256
45b1927934099ea95d315972f7f128ba3af4a64aa483d964f94c599e8e16f094

SHA512
365c33622bb675109dbf9093b0d2a5d3635c8cf9591ff3af6d4be3690499e40252b1ec3712d4031424cf2df8958b197566e995f58d511b16a301b28bdf9c5718

Download Submit
memory/524-76-0x0000000000000000-mapping.dmp

Download
memory/596-71-0x0000000000000000-mapping.dmp

Download
memory/596-80-0x00000000000B0000-0x00000000000DF000-memory.dmp

Filesize
188KB

Download
memory/596-78-0x0000000000640000-0x00000000006D3000-memory.dmp

Filesize
588KB

Download
memory/596-77-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/596-75-0x00000000000B0000-0x00000000000DF000-memory.dmp

Filesize
188KB

Download
memory/596-74-0x0000000000090000-0x00000000000A8000-memory.dmp

Filesize
96KB

Download
memory/908-60-0x00000000004D0000-0x000000000050A000-memory.dmp

Filesize
232KB

Download
memory/908-56-0x0000000000000000-mapping.dmp

Download
memory/908-59-0x0000000000E50000-0x0000000000E90000-memory.dmp

Filesize
256KB

Download
memory/972-54-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download
memory/1380-81-0x0000000004DE0000-0x0000000004ECA000-memory.dmp

Filesize
936KB

Download
memory/1380-70-0x0000000004AC0000-0x0000000004B90000-memory.dmp

Filesize
832KB

Download
memory/1380-79-0x0000000004DE0000-0x0000000004ECA000-memory.dmp

Filesize
936KB

Download
memory/2016-72-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2016-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2016-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2016-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2016-66-0x000000000041F110-mapping.dmp

Download
memory/2016-67-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/2016-69-0x0000000000280000-0x0000000000294000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads