formbook | 66cba319c20a6e956a09334f4a23abc9c3d22c95f49731a04c26e2f8b8598412

General

Target

430917.exe
Size

330KB
MD5

e194989989a1a67a7734611823a1524f
SHA1

bcffc771e7e2f343a007e9a60da71a1e342d691e
SHA256

06ae29042dd19e5cc3e287eafcb47a934aba12b9c3d4224d31f64a700b1b77ca
SHA512

76641f8ed4a09ee40f233f8ba537a8841e6b8cd5f0d7b16a8efcc9154dcc868a05fe72a4f219c948f70fc153ead56da52fb13492c5cad1cba59798171a5637d8

Score

10^/10

formbook s5l persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

s5l

Decoy

greenstock.info

laurajaneaesthetics.com

817comm.com

dbprimery.com

slzu-vxtx9.biz

covetpro.com

50.ink

weick.email

88717888.com

tongyue0423.com

anchorsky.com

horapatarot.com

cadillacforless.com

primesupplyvintage.com

torchinstant.win

thebrandishere.com

www-69677.com

savestj.com

tommydad.com

xigjailbreak.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/828-63-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/828-64-0x000000000041B6E0-mapping.dmp	formbook
behavioral1/memory/828-66-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1756-76-0x0000000000080000-0x00000000000AA000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\YNUTDNC0H = "C:\\Program Files (x86)\\Tkjkdu\\vga_lgd.exe"	help.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	help.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1748 cmd.exe

pid	process
1748	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

430917.exe430917.exehelp.exe

description	pid	process	target process
PID 2040 set thread context of 828	2040	430917.exe	430917.exe
PID 828 set thread context of 1248	828	430917.exe	Explorer.EXE
PID 828 set thread context of 1248	828	430917.exe	Explorer.EXE
PID 1756 set thread context of 1248	1756	help.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

help.exe

description ioc process

File opened for modification C:\Program Files (x86)\Tkjkdu\vga_lgd.exe help.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Tkjkdu\vga_lgd.exe	help.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-790309383-526510583-3802439154-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

430917.exe430917.exehelp.exe

pid	process
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
2040	430917.exe
828	430917.exe
828	430917.exe
828	430917.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe
1756	help.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

430917.exehelp.exe

pid process

828 430917.exe
828 430917.exe
828 430917.exe
828 430917.exe
1756 help.exe
1756 help.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

430917.exe430917.exehelp.exe

description pid process

Token: SeDebugPrivilege 2040 430917.exe
Token: SeDebugPrivilege 828 430917.exe
Token: SeDebugPrivilege 1756 help.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE

pid	process
828	430917.exe
828	430917.exe
828	430917.exe
828	430917.exe
1756	help.exe
1756	help.exe

description	pid	process
Token: SeDebugPrivilege	2040	430917.exe
Token: SeDebugPrivilege	828	430917.exe
Token: SeDebugPrivilege	1756	help.exe

pid	process
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

430917.exe430917.exehelp.exe

description	pid	process	target process
PID 2040 wrote to memory of 804	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 804	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 804	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 804	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 1336	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 1336	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 1336	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 1336	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 2040 wrote to memory of 828	2040	430917.exe	430917.exe
PID 828 wrote to memory of 1756	828	430917.exe	help.exe
PID 828 wrote to memory of 1756	828	430917.exe	help.exe
PID 828 wrote to memory of 1756	828	430917.exe	help.exe
PID 828 wrote to memory of 1756	828	430917.exe	help.exe
PID 1756 wrote to memory of 1748	1756	help.exe	cmd.exe
PID 1756 wrote to memory of 1748	1756	help.exe	cmd.exe
PID 1756 wrote to memory of 1748	1756	help.exe	cmd.exe
PID 1756 wrote to memory of 1748	1756	help.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1248

C:\Users\Admin\AppData\Local\Temp\430917.exe
"C:\Users\Admin\AppData\Local\Temp\430917.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040

C:\Users\Admin\AppData\Local\Temp\430917.exe
"C:\Users\Admin\AppData\Local\Temp\430917.exe"
3⤵
PID:804

C:\Users\Admin\AppData\Local\Temp\430917.exe
"C:\Users\Admin\AppData\Local\Temp\430917.exe"
3⤵
PID:1336

C:\Users\Admin\AppData\Local\Temp\430917.exe
"C:\Users\Admin\AppData\Local\Temp\430917.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:828

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
4⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\430917.exe"
5⤵
- Deletes itself
PID:1748

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\JN052U35\JN0logim.jpeg
Filesize
73KB

MD5
93f77c205a531f435d913c259575a317

SHA1
69ae8713d88969208ec8e3563e386b6008256ce2

SHA256
07e58ed2222f6f0e425b91c430d6f00ad9c681e2259e52a422516e855ecb87ea

SHA512
35b6f280ea6dab55a84848a730ef8e66397a09cab786c16748198e8ba7d8421a27e3368df4362af5f7f9e08de10d4e167b081c5b9843e3aec4a73ed729db1b9f

Download Submit
C:\Users\Admin\AppData\Roaming\JN052U35\JN0logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\JN052U35\JN0logrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/828-68-0x00000000003E0000-0x00000000003F4000-memory.dmp

Filesize
80KB

Download
memory/828-71-0x0000000000560000-0x0000000000574000-memory.dmp

Filesize
80KB

Download
memory/828-67-0x0000000000B70000-0x0000000000E73000-memory.dmp

Filesize
3.0MB

Download
memory/828-60-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/828-61-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/828-63-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/828-64-0x000000000041B6E0-mapping.dmp

Download
memory/828-66-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1248-72-0x0000000006CF0000-0x0000000006E58000-memory.dmp

Filesize
1.4MB

Download
memory/1248-79-0x00000000060E0000-0x00000000061FF000-memory.dmp

Filesize
1.1MB

Download
memory/1248-69-0x0000000006360000-0x000000000645E000-memory.dmp

Filesize
1016KB

Download
memory/1748-74-0x0000000000000000-mapping.dmp

Download
memory/1756-77-0x0000000000790000-0x0000000000A93000-memory.dmp

Filesize
3.0MB

Download
memory/1756-73-0x0000000000000000-mapping.dmp

Download
memory/1756-75-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/1756-76-0x0000000000080000-0x00000000000AA000-memory.dmp

Filesize
168KB

Download
memory/1756-78-0x0000000000500000-0x0000000000593000-memory.dmp

Filesize
588KB

Download
memory/2040-58-0x00000000003A0000-0x00000000003B6000-memory.dmp

Filesize
88KB

Download
memory/2040-59-0x00000000004B0000-0x00000000004B8000-memory.dmp

Filesize
32KB

Download
memory/2040-54-0x0000000000980000-0x00000000009D8000-memory.dmp

Filesize
352KB

Download
memory/2040-57-0x0000000000250000-0x0000000000288000-memory.dmp

Filesize
224KB

Download
memory/2040-56-0x00000000001F0000-0x00000000001F8000-memory.dmp

Filesize
32KB

Download
memory/2040-55-0x0000000076261000-0x0000000076263000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads