formbook | bfcaedd79e990385731eb5f9002f6fc719ec6f2e51749765f4f2593ebcab9aef

General

Target

#PO##5678543278...COPY.exe
Size

302KB
MD5

7a3750d52e2491d0360ec5e3cf5f0b1f
SHA1

21a8a81928261c01ce481a14d623663eef5bf2ba
SHA256

430632994b3bcc69911202aa595375009e84accb95b00917bde643fcf031fa4d
SHA512

099dc4fe67a0ef50459a9f137f41eb78bd6b01cdeec9f8f524fd8476346a132ed4bda5b471e87e5a8be90fbb0ff78d2b7c7d9da25340c2d3d1468d1a46ae1387

Score

10^/10

formbook tnk persistence rat spyware stealer suricata 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
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/1592-59-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1592-60-0x000000000041E320-mapping.dmp	formbook
behavioral1/memory/1592-62-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/908-68-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

112 cmd.exe

pid	process
112	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\OJSHLL20 = "C:\\Program Files (x86)\\Mon0x\\regsvcalu.exe"	chkdsk.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

#PO##5678543278...COPY.exe#PO##5678543278...COPY.exechkdsk.exe

description	pid	process	target process
PID 316 set thread context of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 1592 set thread context of 1308	1592	#PO##5678543278...COPY.exe	Explorer.EXE
PID 908 set thread context of 1308	908	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\Mon0x\regsvcalu.exe chkdsk.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

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

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mon0x\regsvcalu.exe	chkdsk.exe

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

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

#PO##5678543278...COPY.exechkdsk.exe

pid	process
1592	#PO##5678543278...COPY.exe
1592	#PO##5678543278...COPY.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

#PO##5678543278...COPY.exechkdsk.exe

pid	process
1592	#PO##5678543278...COPY.exe
1592	#PO##5678543278...COPY.exe
1592	#PO##5678543278...COPY.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe
908	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

#PO##5678543278...COPY.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1592	#PO##5678543278...COPY.exe
Token: SeDebugPrivilege	908	chkdsk.exe
Token: SeShutdownPrivilege	1308	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1308 Explorer.EXE
1308 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1308 Explorer.EXE
1308 Explorer.EXE

pid	process
1308	Explorer.EXE
1308	Explorer.EXE

pid	process
1308	Explorer.EXE
1308	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

#PO##5678543278...COPY.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 316 wrote to memory of 1592	316	#PO##5678543278...COPY.exe	#PO##5678543278...COPY.exe
PID 1308 wrote to memory of 908	1308	Explorer.EXE	chkdsk.exe
PID 1308 wrote to memory of 908	1308	Explorer.EXE	chkdsk.exe
PID 1308 wrote to memory of 908	1308	Explorer.EXE	chkdsk.exe
PID 1308 wrote to memory of 908	1308	Explorer.EXE	chkdsk.exe
PID 908 wrote to memory of 112	908	chkdsk.exe	cmd.exe
PID 908 wrote to memory of 112	908	chkdsk.exe	cmd.exe
PID 908 wrote to memory of 112	908	chkdsk.exe	cmd.exe
PID 908 wrote to memory of 112	908	chkdsk.exe	cmd.exe
PID 908 wrote to memory of 1372	908	chkdsk.exe	Firefox.exe
PID 908 wrote to memory of 1372	908	chkdsk.exe	Firefox.exe
PID 908 wrote to memory of 1372	908	chkdsk.exe	Firefox.exe
PID 908 wrote to memory of 1372	908	chkdsk.exe	Firefox.exe
PID 908 wrote to memory of 1372	908	chkdsk.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1308

C:\Users\Admin\AppData\Local\Temp\#PO##5678543278...COPY.exe
"C:\Users\Admin\AppData\Local\Temp\#PO##5678543278...COPY.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:316

C:\Users\Admin\AppData\Local\Temp\#PO##5678543278...COPY.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1592

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\#PO##5678543278...COPY.exe"
3⤵
- Deletes itself
PID:112

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1372

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogim.jpeg
Filesize
69KB

MD5
6b6ee96626ff9f1a05f40b842d72514d

SHA1
5908ace521c063e57474958935bf3a7b5d000aef

SHA256
7991767499145b78bf9e6ac40de4200a04c77b1ef70f1f99e917113c70d2ece4

SHA512
57f4ca9c8372c7c8f572977675fffaf279735393145f68839415cc4df2ff14cb6d1b65b4d8c9ecdfc8a3bd791a642dc1af76435a7c3b33d8f01aa8bcbd5b8a77

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-\-1Llogri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/112-69-0x0000000000000000-mapping.dmp

Download
memory/316-55-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/316-54-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download
memory/908-71-0x0000000001DE0000-0x0000000001E73000-memory.dmp

Filesize
588KB

Download
memory/908-70-0x0000000002010000-0x0000000002313000-memory.dmp

Filesize
3.0MB

Download
memory/908-68-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/908-66-0x0000000000000000-mapping.dmp

Download
memory/908-67-0x0000000000830000-0x0000000000837000-memory.dmp

Filesize
28KB

Download
memory/1308-65-0x0000000006A20000-0x0000000006AF8000-memory.dmp

Filesize
864KB

Download
memory/1308-72-0x0000000006DF0000-0x0000000006EF4000-memory.dmp

Filesize
1.0MB

Download
memory/1592-63-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download
memory/1592-64-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1592-62-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1592-60-0x000000000041E320-mapping.dmp

Download
memory/1592-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1592-56-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1592-57-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads