formbook | c47b64bc3082c59d54077af047c2bcffd0d1859934927dc58ffc14b7ac52a1c8

General

Target

Requirement list.exe
Size

648KB
MD5

5dff100422e961e681af596f5307ba6d
SHA1

68735aa701b4be6df63b0fed0edec4800027836b
SHA256

def5dbf8e48af782ccb741ff6a1e1357af8dcafb701089b7f2d1c0919ae79f05
SHA512

07aab159926347c24b6513c7f34a6fd52804f144ca1ff549aea14105a6bcaea715d8258a684be5fb852e9f33f87b96b991503b826bdef77b1dd2de29ac892c95

Score

10^/10

formbook c38r persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c38r

Decoy

angleprotool.com

drilldownaccountancy.com

puur-bb.info

laptoprepairbrighton.net

mainstale.com

soketones.com

cohi.ltd

washntivow.com

datajagabon.online

solidlike.com

tapaznoncc.com

deadoralive.site

sharkapexdwal.com

tribun-news.com

67chain.com

paramorphous.net

chicagoxqa.com

301zaq.info

mansfieldpowdercoating.net

stopdizzy.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/4284-137-0x0000000000A20000-0x0000000000A4D000-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:

msdt.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msdt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\X68LKZIXF = "C:\\Program Files (x86)\\C_vsdpbmx\\chkdskr2kdtz.exe"	msdt.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:

Requirement list.exeRequirement list.exemsdt.exe

description	pid	process	target process
PID 2412 set thread context of 3384	2412	Requirement list.exe	Requirement list.exe
PID 3384 set thread context of 1064	3384	Requirement list.exe	Explorer.EXE
PID 4284 set thread context of 1064	4284	msdt.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msdt.exe

description ioc process

File opened for modification C:\Program Files (x86)\C_vsdpbmx\chkdskr2kdtz.exe msdt.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\C_vsdpbmx\chkdskr2kdtz.exe	msdt.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

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

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

Requirement list.exeRequirement list.exemsdt.exe

pid	process
2412	Requirement list.exe
2412	Requirement list.exe
3384	Requirement list.exe
3384	Requirement list.exe
3384	Requirement list.exe
3384	Requirement list.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1064 Explorer.EXE

pid	process
1064	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Requirement list.exeRequirement list.exemsdt.exe

pid	process
2412	Requirement list.exe
3384	Requirement list.exe
3384	Requirement list.exe
3384	Requirement list.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe
4284	msdt.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Requirement list.exemsdt.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3384	Requirement list.exe
Token: SeDebugPrivilege	4284	msdt.exe
Token: SeShutdownPrivilege	1064	Explorer.EXE
Token: SeCreatePagefilePrivilege	1064	Explorer.EXE
Token: SeShutdownPrivilege	1064	Explorer.EXE
Token: SeCreatePagefilePrivilege	1064	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Requirement list.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 2412 wrote to memory of 3384	2412	Requirement list.exe	Requirement list.exe
PID 2412 wrote to memory of 3384	2412	Requirement list.exe	Requirement list.exe
PID 2412 wrote to memory of 3384	2412	Requirement list.exe	Requirement list.exe
PID 1064 wrote to memory of 4284	1064	Explorer.EXE	msdt.exe
PID 1064 wrote to memory of 4284	1064	Explorer.EXE	msdt.exe
PID 1064 wrote to memory of 4284	1064	Explorer.EXE	msdt.exe
PID 4284 wrote to memory of 4188	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 4188	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 4188	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 3572	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 3572	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 3572	4284	msdt.exe	cmd.exe
PID 4284 wrote to memory of 4384	4284	msdt.exe	Firefox.exe
PID 4284 wrote to memory of 4384	4284	msdt.exe	Firefox.exe
PID 4284 wrote to memory of 4384	4284	msdt.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064

C:\Users\Admin\AppData\Local\Temp\Requirement list.exe
"C:\Users\Admin\AppData\Local\Temp\Requirement list.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2412

C:\Users\Admin\AppData\Local\Temp\Requirement list.exe
"C:\Users\Admin\AppData\Local\Temp\Requirement list.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3384

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- 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:4284

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Requirement list.exe"
3⤵
PID:4188

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:3572

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4384

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

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\Roaming\2MAB93A4\2MAlogim.jpeg
Filesize
79KB

MD5
04809bc8edaf2a85201803b8e11db9dc

SHA1
a08b76c505482b05d903988b783706ccdaeac3df

SHA256
98b7c385f68104644c6ef365eae89d3557a6d2405ccd8dd323f544f008246849

SHA512
adf2ca64d3d94e9526abdf90ad482a659c6cfef62777006f88832414a8896b67e7707426a31d0394ec762e32b710a242181d3770a378e2e18b6e857746ebe479

Download Submit
C:\Users\Admin\AppData\Roaming\2MAB93A4\2MAlogrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\2MAB93A4\2MAlogrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\2MAB93A4\2MAlogri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\2MAB93A4\2MAlogrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1064-134-0x0000000002710000-0x00000000027FA000-memory.dmp

Filesize
936KB

Download
memory/1064-141-0x00000000071C0000-0x0000000007322000-memory.dmp

Filesize
1.4MB

Download
memory/2412-131-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/3384-130-0x0000000000000000-mapping.dmp

Download
memory/3384-132-0x00000000009A0000-0x0000000000CEA000-memory.dmp

Filesize
3.3MB

Download
memory/3384-133-0x00000000006C0000-0x00000000006D4000-memory.dmp

Filesize
80KB

Download
memory/3572-142-0x0000000000000000-mapping.dmp

Download
memory/4188-138-0x0000000000000000-mapping.dmp

Download
memory/4284-140-0x00000000029C0000-0x0000000002A53000-memory.dmp

Filesize
588KB

Download
memory/4284-139-0x0000000002C30000-0x0000000002F7A000-memory.dmp

Filesize
3.3MB

Download
memory/4284-137-0x0000000000A20000-0x0000000000A4D000-memory.dmp

Filesize
180KB

Download
memory/4284-136-0x0000000000A90000-0x0000000000AE7000-memory.dmp

Filesize
348KB

Download
memory/4284-135-0x0000000000000000-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