formbook | 1783cab38631bf2258e78dedfb3669c9a6cd4fff79b57fe50ce47f3f788f6390

General

Target

Payment Slip.pdf.exe
Size

286KB
MD5

fd6e85afa80f7c36795bc58dc4d1fa86
SHA1

419dd6e6e6a1a6753ca51e1612ea6bc61a011d48
SHA256

985fb6bd28653c5012113b096e61bebb49fe5aeeb53c7a128d323803637cf6cd
SHA512

9d9279ddb6e3988371a7ca714ade52e4983eb7df7c3e6bdf322e530c44c730b8b43f4bb943800c842ee4b54bcdbf3341be066a05bdd4fa72e4e2b69db05c3a01
SSDEEP

6144:UhntRj86y2xrIYaHInYgeEVgaQSTxU2ZxmSHM/:KntR5tQtvE6tSxUYxDs

Score

10^/10

formbook tnk credential_access discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

tnk

Decoy

lafioletto.com

mgiuj.com

wolllafvixzies.win

wwwsbvip123.com

nadyaasnae.com

noticesinvoice2017.com

intercapati.com

tg8895.com

9245654874.com

lytsxc.info

rffuf3-liquidwebsites.com

verguet.com

peinturefleursetfemmes.com

xttmrama.com

cryptoinvestmentideas.com

kikumasacarparts.win

freeapk1.com

tasteofimagination.com

gxzyoa.com

cq-mingwei.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/2268-5-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/2268-10-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\FZD0ANZPIP = "C:\\Program Files (x86)\\X5jm0lh5\\hlpdcxox.exe"	cmstp.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1404 set thread context of 2268	1404	Payment Slip.pdf.exe	96
PID 2268 set thread context of 3580	2268	Payment Slip.pdf.exe	56
PID 4924 set thread context of 3580	4924	cmstp.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\X5jm0lh5\hlpdcxox.exe	cmstp.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	Payment Slip.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
2268	Payment Slip.pdf.exe
2268	Payment Slip.pdf.exe
2268	Payment Slip.pdf.exe
2268	Payment Slip.pdf.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2268	Payment Slip.pdf.exe
2268	Payment Slip.pdf.exe
2268	Payment Slip.pdf.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe
4924	cmstp.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	Payment Slip.pdf.exe
Token: SeDebugPrivilege	4924	cmstp.exe
Token: SeShutdownPrivilege	3580	Explorer.EXE
Token: SeCreatePagefilePrivilege	3580	Explorer.EXE
Token: SeShutdownPrivilege	3580	Explorer.EXE
Token: SeCreatePagefilePrivilege	3580	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3580	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 1404 wrote to memory of 2268	1404	Payment Slip.pdf.exe	96
PID 3580 wrote to memory of 4924	3580	Explorer.EXE	97
PID 3580 wrote to memory of 4924	3580	Explorer.EXE	97
PID 3580 wrote to memory of 4924	3580	Explorer.EXE	97
PID 4924 wrote to memory of 3844	4924	cmstp.exe	100
PID 4924 wrote to memory of 3844	4924	cmstp.exe	100
PID 4924 wrote to memory of 3844	4924	cmstp.exe	100
PID 4924 wrote to memory of 3980	4924	cmstp.exe	103
PID 4924 wrote to memory of 3980	4924	cmstp.exe	103
PID 4924 wrote to memory of 3980	4924	cmstp.exe	103
PID 4924 wrote to memory of 5076	4924	cmstp.exe	105
PID 4924 wrote to memory of 5076	4924	cmstp.exe	105
PID 4924 wrote to memory of 5076	4924	cmstp.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2268
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - 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:4924
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3844
- - 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:3980
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:5076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

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

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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\-1L2OPP-\-1Llogim.jpeg

Filesize
80KB

MD5
5821b181b2591bd93eb74d99e655f7b3

SHA1
cdf9465ab65fee3c071b1a2fb17bc9c9b8375927

SHA256
eac7a106569b4c255f20e4ab45e76260632709ae005f20dc1d95fb18960deccc

SHA512
d05e0677b2dd92e2cc52014f963a1b2eea9366e5df7c971e38d72a5dd02f24e857446999a27fe11057249fc2ebdc4c1253267bf3a92587c4b1ce18b5a4e7f6e5

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1404-1-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/1404-2-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/1404-3-0x0000000075322000-0x0000000075323000-memory.dmp

Filesize
4KB

Download
memory/1404-4-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/1404-7-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/1404-0-0x0000000075322000-0x0000000075323000-memory.dmp

Filesize
4KB

Download
memory/2268-10-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2268-11-0x0000000001550000-0x0000000001564000-memory.dmp

Filesize
80KB

Download
memory/2268-8-0x0000000001600000-0x000000000194A000-memory.dmp

Filesize
3.3MB

Download
memory/2268-5-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3580-16-0x0000000008240000-0x000000000832C000-memory.dmp

Filesize
944KB

Download
memory/3580-19-0x0000000008330000-0x00000000083F2000-memory.dmp

Filesize
776KB

Download
memory/3580-20-0x0000000008330000-0x00000000083F2000-memory.dmp

Filesize
776KB

Download
memory/3580-23-0x0000000008330000-0x00000000083F2000-memory.dmp

Filesize
776KB

Download
memory/3580-12-0x0000000008240000-0x000000000832C000-memory.dmp

Filesize
944KB

Download
memory/4924-13-0x00000000004E0000-0x00000000004F6000-memory.dmp

Filesize
88KB

Download
memory/4924-14-0x00000000004E0000-0x00000000004F6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads