formbook | c4147dce1e2af54d878eb35144f9350b85dd3173497e3572d4d8d4e52b89e3ab

General

Target

2.exe
Size

431KB
MD5

39f5517cde8252f68c878e5956071441
SHA1

336464c016ef58f9e82075754f200dbe59b593e4
SHA256

7cf9a8e9f9164be0f93bfb8810892a0dbaf5f7748105a8375afa3cc558f9d940
SHA512

a9f6960f08dd58cdeb5323d8f5d7e12439de61b1f83877a916596a3acb72c6e2bfdf6865da623c9c7bec2996e02446d029ce7a53e2b35484be31468b477d97a4
SSDEEP

6144:kmdYfNunWu1IA2UcaYYeAJ3NSMv4DKj1EulrsbCwOI/4WJUsJw3Gp0Xm2YcHYeQm:PDWuqUc5ohNSA4s+uGz/Li2WXm2Yo

Score

10^/10

formbook rzt discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rzt

Decoy

travelbykeystone.com

gardenstoresupply.com

tobelias.com

thecosmicdna.com

lmshawaii.com

icorn.finance

afontoto.com

usbracesbest.com

unity-title.com

kindredanimal.com

milestonecms.com

aljazeerahlounge.com

jokcreates.com

justjazzythings.com

tiktokbestdeals.com

ww-marketing.com

humblehousekeep.com

alloreklama.com

cranecurrency.info

maraisman.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4432-13-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4432-18-0x0000000000400000-0x000000000042E000-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
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4616 set thread context of 4432	4616	2.exe	91
PID 4432 set thread context of 3588	4432	vbc.exe	56
PID 1968 set thread context of 3588	1968	chkdsk.exe	56

System Location Discovery: System Language Discovery 1 TTPs 3 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

pid	Process
4432	vbc.exe
4432	vbc.exe
4432	vbc.exe
4432	vbc.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4432	vbc.exe
4432	vbc.exe
4432	vbc.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe
1968	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	vbc.exe
Token: SeDebugPrivilege	1968	chkdsk.exe
Token: SeShutdownPrivilege	3588	Explorer.EXE
Token: SeCreatePagefilePrivilege	3588	Explorer.EXE
Token: SeShutdownPrivilege	3588	Explorer.EXE
Token: SeCreatePagefilePrivilege	3588	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 4616 wrote to memory of 4432	4616	2.exe	91
PID 3588 wrote to memory of 1968	3588	Explorer.EXE	92
PID 3588 wrote to memory of 1968	3588	Explorer.EXE	92
PID 3588 wrote to memory of 1968	3588	Explorer.EXE	92
PID 1968 wrote to memory of 4504	1968	chkdsk.exe	93
PID 1968 wrote to memory of 4504	1968	chkdsk.exe	93
PID 1968 wrote to memory of 4504	1968	chkdsk.exe	93
PID 1968 wrote to memory of 2760	1968	chkdsk.exe	95
PID 1968 wrote to memory of 2760	1968	chkdsk.exe	95
PID 1968 wrote to memory of 2760	1968	chkdsk.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\2.exe
  "C:\Users\Admin\AppData\Local\Temp\2.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4432
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4504
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

Query Registry

1

T1012

System Information Discovery

1

T1082

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
C:\Users\Admin\AppData\Roaming\J3L08SE3\J3Llogim.jpeg

Filesize
77KB

MD5
cf33135dd37d58a01f308329a6c8a769

SHA1
801788c59c9dc7b9c2f9683b7e25828bba6183a8

SHA256
7486f9a88dc52626e6580e9f4df77300ad14018a0ae59b0c988c32e550d438db

SHA512
be632a9d0d5aaa103b041c03a79f3239703563785c0168df1ddd8bee9c5d84945472bea79fb52b8da2082ba54d0b8c8cdf7bb28d6ce9bea28232c2dccb63473f

Download Submit
C:\Users\Admin\AppData\Roaming\J3L08SE3\J3Llogrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\J3L08SE3\J3Llogrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\J3L08SE3\J3Llogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\J3L08SE3\J3Llogrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1968-21-0x0000000000590000-0x000000000059A000-memory.dmp

Filesize
40KB

Download
memory/1968-22-0x0000000000590000-0x000000000059A000-memory.dmp

Filesize
40KB

Download
memory/3588-43-0x00000000086B0000-0x0000000008820000-memory.dmp

Filesize
1.4MB

Download
memory/3588-42-0x00000000086B0000-0x0000000008820000-memory.dmp

Filesize
1.4MB

Download
memory/3588-37-0x0000000008560000-0x00000000086AE000-memory.dmp

Filesize
1.3MB

Download
memory/3588-50-0x00000000086B0000-0x0000000008820000-memory.dmp

Filesize
1.4MB

Download
memory/3588-20-0x0000000008560000-0x00000000086AE000-memory.dmp

Filesize
1.3MB

Download
memory/4432-19-0x0000000001330000-0x0000000001344000-memory.dmp

Filesize
80KB

Download
memory/4432-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4432-16-0x0000000001490000-0x00000000017DA000-memory.dmp

Filesize
3.3MB

Download
memory/4432-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4616-7-0x0000000005160000-0x00000000051B6000-memory.dmp

Filesize
344KB

Download
memory/4616-15-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4616-12-0x0000000005FB0000-0x0000000005FE6000-memory.dmp

Filesize
216KB

Download
memory/4616-11-0x0000000005F40000-0x0000000005F96000-memory.dmp

Filesize
344KB

Download
memory/4616-10-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4616-9-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/4616-8-0x0000000005010000-0x000000000501A000-memory.dmp

Filesize
40KB

Download
memory/4616-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/4616-6-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4616-5-0x0000000004E30000-0x0000000004E3A000-memory.dmp

Filesize
40KB

Download
memory/4616-4-0x0000000004F20000-0x0000000004FB2000-memory.dmp

Filesize
584KB

Download
memory/4616-3-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/4616-2-0x0000000004E80000-0x0000000004F1C000-memory.dmp

Filesize
624KB

Download
memory/4616-1-0x00000000003D0000-0x0000000000442000-memory.dmp

Filesize
456KB

Download

Analysis

Sharing