formbook | c36f38554da7bc44cfd05724102b03e721bbb40e379ebf31b8d63cf07ff8f9f6

General

Target

orden de compra.exe
Size

385KB
MD5

e496718a8033ca85b0a6ff3ea197828c
SHA1

6e150649bd44e3c8023589eaadd2633b09a14d81
SHA256

bc207dbe79daf9a2da67fd90beef3fbe5db670288fd9c1da72ccda9c65d3d028
SHA512

05b483ec56adef219d6e273d9b1882898121d1d3d0c3df1b87f384a2583cf4ff8189f07608f1ee4a3e6152a175dda6de1fc1bffd85071b91626ea9b2c00c6831

Score

10^/10

formbook kvsz persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kvsz

Decoy

okashyns.com

sbsgamedaejeon-two.com

drb77.com

top5dating.com

websprings.online

voizers.com

zenith.site

lahistoriade.com

qv85.com

armandonieto.com

priestvedic.com

jessandjeff.net

magic-desktop.com

jitaji.com

ldmeili.com

yuwanqingmy.com

buzhouorg.com

chaiseloungereviews.com

m2g8way.com

freespin-support.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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4248-138-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/3456-146-0x00000000007A0000-0x00000000007CE000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

orden de compra.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	orden de compra.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XPSXCZIXBV = "C:\\Program Files (x86)\\Bet20lbo8\\hx4hchzxhdj0.exe"	msiexec.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

orden de compra.exeRegSvcs.exemsiexec.exe

description	pid	process	target process
PID 2104 set thread context of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 4248 set thread context of 892	4248	RegSvcs.exe	Explorer.EXE
PID 3456 set thread context of 892	3456	msiexec.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Bet20lbo8\hx4hchzxhdj0.exe msiexec.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

2148 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Bet20lbo8\hx4hchzxhdj0.exe	msiexec.exe

pid	process
2148	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

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

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

orden de compra.exeRegSvcs.exemsiexec.exe

pid	process
2104	orden de compra.exe
2104	orden de compra.exe
2104	orden de compra.exe
2104	orden de compra.exe
4248	RegSvcs.exe
4248	RegSvcs.exe
4248	RegSvcs.exe
4248	RegSvcs.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

892 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exemsiexec.exe

pid process

4248 RegSvcs.exe
4248 RegSvcs.exe
4248 RegSvcs.exe
3456 msiexec.exe
3456 msiexec.exe
3456 msiexec.exe
3456 msiexec.exe

pid	process
892	Explorer.EXE

pid	process
4248	RegSvcs.exe
4248	RegSvcs.exe
4248	RegSvcs.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe
3456	msiexec.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

orden de compra.exeRegSvcs.exemsiexec.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2104	orden de compra.exe
Token: SeDebugPrivilege	4248	RegSvcs.exe
Token: SeDebugPrivilege	3456	msiexec.exe
Token: SeShutdownPrivilege	892	Explorer.EXE
Token: SeCreatePagefilePrivilege	892	Explorer.EXE
Token: SeShutdownPrivilege	892	Explorer.EXE
Token: SeCreatePagefilePrivilege	892	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

orden de compra.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 2104 wrote to memory of 2148	2104	orden de compra.exe	schtasks.exe
PID 2104 wrote to memory of 2148	2104	orden de compra.exe	schtasks.exe
PID 2104 wrote to memory of 2148	2104	orden de compra.exe	schtasks.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 2104 wrote to memory of 4248	2104	orden de compra.exe	RegSvcs.exe
PID 892 wrote to memory of 3456	892	Explorer.EXE	msiexec.exe
PID 892 wrote to memory of 3456	892	Explorer.EXE	msiexec.exe
PID 892 wrote to memory of 3456	892	Explorer.EXE	msiexec.exe
PID 3456 wrote to memory of 2788	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 2788	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 2788	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 4636	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 4636	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 4636	3456	msiexec.exe	cmd.exe
PID 3456 wrote to memory of 4744	3456	msiexec.exe	Firefox.exe
PID 3456 wrote to memory of 4744	3456	msiexec.exe	Firefox.exe
PID 3456 wrote to memory of 4744	3456	msiexec.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892

C:\Users\Admin\AppData\Local\Temp\orden de compra.exe
"C:\Users\Admin\AppData\Local\Temp\orden de compra.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zDhkri" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4EDB.tmp"
3⤵
- Creates scheduled task(s)
PID:2148

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4248

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:4132

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1888

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2044

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2172

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.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:3456

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:2788

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:4636

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\Local\Temp\tmp4EDB.tmp
Filesize
1KB

MD5
b088ae3376f587427a4a36d05cb14e76

SHA1
1355a01960332ae8321ddd0c30d8239a2532183c

SHA256
404abea56f212471b2880730a241e73a5d1082c88711ee84b919621e8965482b

SHA512
84e3dc137c96338d9680357cd359fa421a48a54ce9ef0a86813920dab1fae4d4fa4b0140ba37c71056a093203f01ea73d21ab2265e82c2b1bf630fc4aa04077e

Download Submit
C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logim.jpeg
Filesize
85KB

MD5
842b4550688d522c40e741592757f726

SHA1
19fd37549a1ad0030593f37973afac0505b89262

SHA256
cb62d6b9947a9258da6874cf900f3e59d07a349dc25eb897a3232836bf1cdff5

SHA512
a2cd13fd999ffcf946b0f896787799159a253fe8049b86b0e4fb4804a9c8e8268a734eac0765effe548f1fb7876a0be47eeac056fb107c1a106db7efae80fe89

Download Submit
C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/892-149-0x0000000008050000-0x000000000817A000-memory.dmp

Filesize
1.2MB

Download
memory/892-142-0x0000000002550000-0x00000000026B8000-memory.dmp

Filesize
1.4MB

Download
memory/2104-130-0x0000000000300000-0x0000000000366000-memory.dmp

Filesize
408KB

Download
memory/2104-131-0x0000000005240000-0x00000000057E4000-memory.dmp

Filesize
5.6MB

Download
memory/2104-132-0x0000000004D30000-0x0000000004DC2000-memory.dmp

Filesize
584KB

Download
memory/2104-133-0x0000000004D20000-0x0000000004D2A000-memory.dmp

Filesize
40KB

Download
memory/2104-134-0x0000000004F70000-0x000000000500C000-memory.dmp

Filesize
624KB

Download
memory/2148-135-0x0000000000000000-mapping.dmp

Download
memory/2788-144-0x0000000000000000-mapping.dmp

Download
memory/3456-147-0x00000000028F0000-0x0000000002C3A000-memory.dmp

Filesize
3.3MB

Download
memory/3456-148-0x0000000002730000-0x00000000027C3000-memory.dmp

Filesize
588KB

Download
memory/3456-146-0x00000000007A0000-0x00000000007CE000-memory.dmp

Filesize
184KB

Download
memory/3456-145-0x00000000007D0000-0x00000000007E2000-memory.dmp

Filesize
72KB

Download
memory/3456-143-0x0000000000000000-mapping.dmp

Download
memory/4248-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4248-137-0x0000000000000000-mapping.dmp

Download
memory/4248-141-0x0000000000A10000-0x0000000000A24000-memory.dmp

Filesize
80KB

Download
memory/4248-140-0x0000000000F40000-0x000000000128A000-memory.dmp

Filesize
3.3MB

Download
memory/4636-150-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads