formbook | 53506f1598a87e624f80a10d0b9db99790fe3252ae647c334d1957ef0d07721d

Analysis

max time kernel
148s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
07-07-2023 18:44

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General

Target

53506f1598a87e624f80a10d0.exe
Size

746KB
MD5

ef6def73818ea13b53861bd8a9f8b864
SHA1

8336b65aef30e0e1ea91c534fa430f128a910a2e
SHA256

53506f1598a87e624f80a10d0b9db99790fe3252ae647c334d1957ef0d07721d
SHA512

bd9b6a3470d97ea8b47d9057ceb593059102c5304952595294b199228ef4566016e554862543d3e3b21d90efe3f251b56065f8228a9983a79de27dc08a8f29a3
SSDEEP

12288:3GR+Vd0ckynvLwdJgNsycuL573BhZWPNFWrsEL09pmHtJNNW/8kUPQ:3GAVk4Mwom77WGrs9StJNSUP

Score

10^/10

formbook modiloader t3c9 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

t3c9

Decoy

shadeshmarriagemedia.com

e-russ.com

sofiashome.com

theworriedwell.com

americantechfront.com

seasonssparkling.com

maximuscanada.net

tifin-private-markets.com

amecc2.net

xuexi22.icu

injectiontek.com

enrrocastoneimports.com

marvelouslightcandleco.com

eaamedia.com

pmediaerp.com

tikivips111.com

chesterfieldcleaningcare.com

thecrowdedtablemusic.com

duncanvillepanthers.com

floriculturajoinville.xyz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/5000-141-0x0000000004F70000-0x0000000004F9F000-memory.dmp	formbook
behavioral2/memory/1976-149-0x0000000000AA0000-0x0000000000ACF000-memory.dmp	formbook
behavioral2/memory/1976-150-0x0000000000AA0000-0x0000000000ACF000-memory.dmp	formbook

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral2/memory/5000-134-0x0000000002290000-0x00000000022C2000-memory.dmp	modiloader_stage2

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Yjwbdcwu = "C:\\Users\\Public\\Yjwbdcwu.url"	53506f1598a87e624f80a10d0.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5000 set thread context of 3156	5000	53506f1598a87e624f80a10d0.exe	70
PID 1976 set thread context of 3156	1976	rundll32.exe	70

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	13	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	15	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 54 IoCs

pid	Process
5000	53506f1598a87e624f80a10d0.exe
5000	53506f1598a87e624f80a10d0.exe
5000	53506f1598a87e624f80a10d0.exe
5000	53506f1598a87e624f80a10d0.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3156	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
5000	53506f1598a87e624f80a10d0.exe
5000	53506f1598a87e624f80a10d0.exe
5000	53506f1598a87e624f80a10d0.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe
1976	rundll32.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5000	53506f1598a87e624f80a10d0.exe
Token: SeShutdownPrivilege	3156	Explorer.EXE
Token: SeCreatePagefilePrivilege	3156	Explorer.EXE
Token: SeDebugPrivilege	1976	rundll32.exe
Token: SeShutdownPrivilege	3156	Explorer.EXE
Token: SeCreatePagefilePrivilege	3156	Explorer.EXE
Token: SeShutdownPrivilege	3156	Explorer.EXE
Token: SeCreatePagefilePrivilege	3156	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 1976	3156	Explorer.EXE	83
PID 3156 wrote to memory of 1976	3156	Explorer.EXE	83
PID 3156 wrote to memory of 1976	3156	Explorer.EXE	83
PID 1976 wrote to memory of 1192	1976	rundll32.exe	84
PID 1976 wrote to memory of 1192	1976	rundll32.exe	84
PID 1976 wrote to memory of 1192	1976	rundll32.exe	84
PID 1976 wrote to memory of 3788	1976	rundll32.exe	88
PID 1976 wrote to memory of 3788	1976	rundll32.exe	88
PID 1976 wrote to memory of 3788	1976	rundll32.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Users\Admin\AppData\Local\Temp\53506f1598a87e624f80a10d0.exe
  "C:\Users\Admin\AppData\Local\Temp\53506f1598a87e624f80a10d0.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:5000
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1976
- - 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:1192
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:3788

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
46KB

MD5
02d2c46697e3714e49f46b680b9a6b83

SHA1
84f98b56d49f01e9b6b76a4e21accf64fd319140

SHA256
522cad95d3fa6ebb3274709b8d09bbb1ca37389d0a924cd29e934a75aa04c6c9

SHA512
60348a145bfc71b1e07cb35fa79ab5ff472a3d0a557741ea2d39b3772bc395b86e261bd616f65307ae0d997294e49b5548d32f11e86ef3e2704959ca63da8aac

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logim.jpeg

Filesize
80KB

MD5
cfab341926572612adda82d507a64c3e

SHA1
99bdacc2ec5990c938f6531aae2df3bea57b2518

SHA256
dbc84f121451fad39b7056aeb2565eec06c49959d67eaf34d30b015212d51eb6

SHA512
fbab07776d30416e5ea933771c742e3923c8572a2a6bd41cbd5b605e210e4310cdae662c6a6d0aafaf00804d6f6f59db2128dd84755108f5aae08192624ef036

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
C:\Users\Admin\AppData\Roaming\-874P7EV\-87logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1976-167-0x0000000002E10000-0x0000000002EA4000-memory.dmp

Filesize
592KB

Download
memory/1976-148-0x0000000000AE0000-0x0000000000AF4000-memory.dmp

Filesize
80KB

Download
memory/1976-149-0x0000000000AA0000-0x0000000000ACF000-memory.dmp

Filesize
188KB

Download
memory/1976-150-0x0000000000AA0000-0x0000000000ACF000-memory.dmp

Filesize
188KB

Download
memory/1976-145-0x0000000000AE0000-0x0000000000AF4000-memory.dmp

Filesize
80KB

Download
memory/1976-159-0x0000000002AC0000-0x0000000002E0A000-memory.dmp

Filesize
3.3MB

Download
memory/3156-168-0x0000000007A90000-0x0000000007BA8000-memory.dmp

Filesize
1.1MB

Download
memory/3156-144-0x0000000002570000-0x0000000002656000-memory.dmp

Filesize
920KB

Download
memory/3156-169-0x0000000007A90000-0x0000000007BA8000-memory.dmp

Filesize
1.1MB

Download
memory/3156-172-0x0000000007A90000-0x0000000007BA8000-memory.dmp

Filesize
1.1MB

Download
memory/5000-134-0x0000000002290000-0x00000000022C2000-memory.dmp

Filesize
200KB

Download
memory/5000-143-0x0000000005380000-0x0000000005395000-memory.dmp

Filesize
84KB

Download
memory/5000-142-0x00000000054B0000-0x00000000057FA000-memory.dmp

Filesize
3.3MB

Download
memory/5000-141-0x0000000004F70000-0x0000000004F9F000-memory.dmp

Filesize
188KB

Download
memory/5000-137-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5000-136-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download