formbook | 2cea867ece0089b2bdb51424e81d2f9bd31c80f5c3910fa17bce6c7a36eaed66

General

Target

S-19799C.exe
Size

633KB
MD5

d7bd3e606c11ebcf2262604c19538bcf
SHA1

2e25f74cfc2acbe56592888237270d8f6f6df50d
SHA256

55c852b0c762e30f96e7948cd2db3f940f8a18714f4c8146775d65e53f9fd385
SHA512

8b5873e50dd6f8a899f723881705cb8187730caeeb1d9432deacf90a77b950dc6104c64bdeaa66dd98c20c0ac70c0a9e2a8f4042ce406ed77961a4820d431d5d

Score

10^/10

formbook 5x9 persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

5x9

Decoy

leolarice.com

dldkys.com

pomponnextdoor.com

bandhenvironmentalservices.net

deli-jewelry.info

eo57.com

ymmggsy.com

lelefamilys.com

genizarohorses.com

wingedwhalemedia.com

taoxinwz.com

bestspanearme.net

1q7five.loan

badou28.com

a-ztreeservice.net

edfwebspace.com

haha688.net

thepathtowellbeing.com

theresetcoach.com

redeyesg.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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3136-138-0x0000000000180000-0x00000000001AA000-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
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\JRYLZDJ0GL = "C:\\Program Files (x86)\\Dabj8q8zx\\cx4mjb.exe"	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

S-19799C.exeS-19799C.exerundll32.exe

description	pid	process	target process
PID 1928 set thread context of 2696	1928	S-19799C.exe	S-19799C.exe
PID 2696 set thread context of 768	2696	S-19799C.exe	Explorer.EXE
PID 3136 set thread context of 768	3136	rundll32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Dabj8q8zx\cx4mjb.exe rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dabj8q8zx\cx4mjb.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

S-19799C.exeS-19799C.exerundll32.exe

pid	process
1928	S-19799C.exe
1928	S-19799C.exe
2696	S-19799C.exe
2696	S-19799C.exe
2696	S-19799C.exe
2696	S-19799C.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe
3136	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

768 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

S-19799C.exeS-19799C.exerundll32.exe

pid process

1928 S-19799C.exe
2696 S-19799C.exe
2696 S-19799C.exe
2696 S-19799C.exe
3136 rundll32.exe
3136 rundll32.exe

pid	process
768	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

S-19799C.exerundll32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2696	S-19799C.exe
Token: SeDebugPrivilege	3136	rundll32.exe
Token: SeShutdownPrivilege	768	Explorer.EXE
Token: SeCreatePagefilePrivilege	768	Explorer.EXE
Token: SeShutdownPrivilege	768	Explorer.EXE
Token: SeCreatePagefilePrivilege	768	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

S-19799C.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1928 wrote to memory of 2696	1928	S-19799C.exe	S-19799C.exe
PID 1928 wrote to memory of 2696	1928	S-19799C.exe	S-19799C.exe
PID 1928 wrote to memory of 2696	1928	S-19799C.exe	S-19799C.exe
PID 768 wrote to memory of 3136	768	Explorer.EXE	rundll32.exe
PID 768 wrote to memory of 3136	768	Explorer.EXE	rundll32.exe
PID 768 wrote to memory of 3136	768	Explorer.EXE	rundll32.exe
PID 3136 wrote to memory of 2008	3136	rundll32.exe	cmd.exe
PID 3136 wrote to memory of 2008	3136	rundll32.exe	cmd.exe
PID 3136 wrote to memory of 2008	3136	rundll32.exe	cmd.exe
PID 3136 wrote to memory of 824	3136	rundll32.exe	cmd.exe
PID 3136 wrote to memory of 824	3136	rundll32.exe	cmd.exe
PID 3136 wrote to memory of 824	3136	rundll32.exe	cmd.exe

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

C:\Users\Admin\AppData\Local\Temp\S-19799C.exe
"C:\Users\Admin\AppData\Local\Temp\S-19799C.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1928

C:\Users\Admin\AppData\Local\Temp\S-19799C.exe
"C:\Users\Admin\AppData\Local\Temp\S-19799C.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2696

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Adds 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:3136

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\S-19799C.exe"
3⤵
PID:2008

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:824

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

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

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

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Roaming\-65P1A7U\-65logim.jpeg
Filesize
76KB

MD5
18b224c817282e01ddce2ae42f3f7243

SHA1
e3bb271adcaa1739c7de63ad72dfc31fb95bbaa8

SHA256
b6f29e95653033ac884cbd0bc93f93ebd1ed88edf0db6fcf0048080e6e60ec49

SHA512
2d795dbddea6a0a067a63d5a931ddc6c0c212d23d2d0dd8a6f09fd794519ce585c37f12525866bb7e996a158abc8af648474b09f70fd9f0fb85071959ae6170e

Download Submit
C:\Users\Admin\AppData\Roaming\-65P1A7U\-65logrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\-65P1A7U\-65logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-65P1A7U\-65logrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/768-141-0x0000000002460000-0x0000000002507000-memory.dmp

Filesize
668KB

Download
memory/768-134-0x0000000002830000-0x0000000002976000-memory.dmp

Filesize
1.3MB

Download
memory/824-142-0x0000000000000000-mapping.dmp

Download
memory/1928-131-0x0000000000400000-0x00000000004A4000-memory.dmp

Filesize
656KB

Download
memory/2008-136-0x0000000000000000-mapping.dmp

Download
memory/2696-130-0x0000000000000000-mapping.dmp

Download
memory/2696-133-0x00000000009E0000-0x00000000009F4000-memory.dmp

Filesize
80KB

Download
memory/2696-132-0x0000000000A40000-0x0000000000D8A000-memory.dmp

Filesize
3.3MB

Download
memory/3136-138-0x0000000000180000-0x00000000001AA000-memory.dmp

Filesize
168KB

Download
memory/3136-139-0x0000000002290000-0x00000000025DA000-memory.dmp

Filesize
3.3MB

Download
memory/3136-140-0x0000000002180000-0x0000000002213000-memory.dmp

Filesize
588KB

Download
memory/3136-137-0x0000000000970000-0x0000000000984000-memory.dmp

Filesize
80KB

Download
memory/3136-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads