formbook | 68527014856bd500a522a073f6aa516a0afa39ceca0753eca03db7fbdfb8153b

General

Target

Mensaje SWIFT.exe
Size

1.6MB
MD5

e33828622c9d953e1e5ad7a3b16d2b77
SHA1

c15e6c76cc4448a4f27ade1a70c4aaf2486503e6
SHA256

2f05200e09f38d2197fb48d265bcd4d050131f688ce51cf86478192df100d675
SHA512

903e518f4b481c13a10eef062a0499c72ff810dd1a3f0dad620cb5fa4b5b6cb244db999d09f7813e020b4fb24c54522f067903c60829d0f7f6c3a1c7a492d86f

Score

10^/10

formbook n7ak persistence rat spyware stealer suricata trojan upx

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n7ak

Decoy

audereventur.com

huro14.com

wwwjinsha155.com

antiquevendor.com

samuraisoulfood.net

traffic4updates.download

hypersarv.com

rapport-happy-wedding.com

rokutechnosupport.online

allworljob.com

hanaleedossmann.com

kauai-marathon.com

bepbosch.com

kangen-international.com

zoneshopemenowz.com

belviderewrestling.com

ipllink.com

sellingforcreators.com

wwwswty6655.com

qtumboa.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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4028-136-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4580-142-0x0000000000CD0000-0x0000000000CFD000-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:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\3FXTJZ-XP = "C:\\Program Files (x86)\\Qn4i\\ThumbCachefzd0gbm.exe"	chkdsk.exe

Executes dropped EXE 1 IoCs

Processes:

Mensaje SWIFTmgr.exe

pid process

2888 Mensaje SWIFTmgr.exe

pid	process
2888	Mensaje SWIFTmgr.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe	upx
C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe	upx

Drops startup file 1 IoCs

Processes:

Mensaje SWIFT.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MicrosoftEdgeBCHost.url	Mensaje SWIFT.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

Suspicious use of SetThreadContext 3 IoCs

Processes:

Mensaje SWIFT.exeMensaje SWIFT.exechkdsk.exe

description	pid	process	target process
PID 2360 set thread context of 4028	2360	Mensaje SWIFT.exe	Mensaje SWIFT.exe
PID 4028 set thread context of 768	4028	Mensaje SWIFT.exe	Explorer.EXE
PID 4580 set thread context of 768	4580	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)\Qn4i\ThumbCachefzd0gbm.exe chkdsk.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process

3380 2888 WerFault.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)\Qn4i\ThumbCachefzd0gbm.exe	chkdsk.exe

pid	pid_target	process
3380	2888	WerFault.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-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

Mensaje SWIFT.exechkdsk.exe

pid	process
4028	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

768 Explorer.EXE

pid	process
768	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Mensaje SWIFT.exeMensaje SWIFT.exechkdsk.exe

pid	process
2360	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4028	Mensaje SWIFT.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe
4580	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

Mensaje SWIFT.exeExplorer.EXEchkdsk.exe

description	pid	process
Token: SeDebugPrivilege	4028	Mensaje SWIFT.exe
Token: SeShutdownPrivilege	768	Explorer.EXE
Token: SeCreatePagefilePrivilege	768	Explorer.EXE
Token: SeDebugPrivilege	4580	chkdsk.exe
Token: SeShutdownPrivilege	768	Explorer.EXE
Token: SeCreatePagefilePrivilege	768	Explorer.EXE
Token: SeShutdownPrivilege	768	Explorer.EXE
Token: SeCreatePagefilePrivilege	768	Explorer.EXE

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

Mensaje SWIFT.exe

pid process

2360 Mensaje SWIFT.exe
2360 Mensaje SWIFT.exe
2360 Mensaje SWIFT.exe
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

Mensaje SWIFT.exe

pid process

2360 Mensaje SWIFT.exe
2360 Mensaje SWIFT.exe
2360 Mensaje SWIFT.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Mensaje SWIFT.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 2360 wrote to memory of 2888	2360	Mensaje SWIFT.exe	Mensaje SWIFTmgr.exe
PID 2360 wrote to memory of 2888	2360	Mensaje SWIFT.exe	Mensaje SWIFTmgr.exe
PID 2360 wrote to memory of 2888	2360	Mensaje SWIFT.exe	Mensaje SWIFTmgr.exe
PID 2360 wrote to memory of 4028	2360	Mensaje SWIFT.exe	Mensaje SWIFT.exe
PID 2360 wrote to memory of 4028	2360	Mensaje SWIFT.exe	Mensaje SWIFT.exe
PID 2360 wrote to memory of 4028	2360	Mensaje SWIFT.exe	Mensaje SWIFT.exe
PID 2360 wrote to memory of 4028	2360	Mensaje SWIFT.exe	Mensaje SWIFT.exe
PID 768 wrote to memory of 4580	768	Explorer.EXE	chkdsk.exe
PID 768 wrote to memory of 4580	768	Explorer.EXE	chkdsk.exe
PID 768 wrote to memory of 4580	768	Explorer.EXE	chkdsk.exe
PID 4580 wrote to memory of 1204	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 1204	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 1204	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 652	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 652	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 652	4580	chkdsk.exe	cmd.exe
PID 4580 wrote to memory of 3712	4580	chkdsk.exe	Firefox.exe
PID 4580 wrote to memory of 3712	4580	chkdsk.exe	Firefox.exe
PID 4580 wrote to memory of 3712	4580	chkdsk.exe	Firefox.exe

C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFT.exe
"C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFT.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2360

C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe
"C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe"
2⤵
- Executes dropped EXE
PID:2888

C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFT.exe
"C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFT.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2888 -ip 2888
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 264
1⤵
- Program crash
PID:3380

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:768

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds policy 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:4580

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFT.exe"
3⤵
PID:1204

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⤵
PID:652

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3712

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

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe
Filesize
105KB

MD5
d5ca6e1f080abc64bbb11e098acbeabb

SHA1
1849634bf5a65e1baddddd4452c99dfa003e2647

SHA256
30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

SHA512
aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

Download Submit
C:\Users\Admin\AppData\Local\Temp\Mensaje SWIFTmgr.exe
Filesize
105KB

MD5
d5ca6e1f080abc64bbb11e098acbeabb

SHA1
1849634bf5a65e1baddddd4452c99dfa003e2647

SHA256
30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

SHA512
aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologim.jpeg
Filesize
75KB

MD5
057f734333d66f79c39c60c3e97b8a78

SHA1
3c7f0c29f4c04e6b28f2928a9ab823f12a346344

SHA256
0a610b4a8a90fe7abb1bc26f67ca08d873214cac4cbe969b15a9ebb642a2b9f1

SHA512
94a38d80f2f6b4c7e642a5b2cd1bb33aa692d9fefb7a1c7192b8a13915fd4bfd4b31cb7347a0ce55f956656073bebfa51d415b9b0f6f36374b00ee590b747cbe

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/652-147-0x0000000000000000-mapping.dmp

Download
memory/768-139-0x0000000002830000-0x000000000294A000-memory.dmp

Filesize
1.1MB

Download
memory/768-146-0x00000000079A0000-0x0000000007B1E000-memory.dmp

Filesize
1.5MB

Download
memory/1204-143-0x0000000000000000-mapping.dmp

Download
memory/2360-133-0x0000000000F90000-0x0000000000FBD000-memory.dmp

Filesize
180KB

Download
memory/2360-134-0x0000000000F40000-0x0000000000F43000-memory.dmp

Filesize
12KB

Download
memory/2888-130-0x0000000000000000-mapping.dmp

Download
memory/4028-136-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4028-137-0x0000000001C10000-0x0000000001F5A000-memory.dmp

Filesize
3.3MB

Download
memory/4028-138-0x0000000001710000-0x0000000001724000-memory.dmp

Filesize
80KB

Download
memory/4028-135-0x0000000000000000-mapping.dmp

Download
memory/4580-145-0x00000000014C0000-0x0000000001553000-memory.dmp

Filesize
588KB

Download
memory/4580-144-0x00000000015C0000-0x000000000190A000-memory.dmp

Filesize
3.3MB

Download
memory/4580-141-0x0000000000070000-0x000000000007A000-memory.dmp

Filesize
40KB

Download
memory/4580-142-0x0000000000CD0000-0x0000000000CFD000-memory.dmp

Filesize
180KB

Download
memory/4580-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads