formbook | 6401173b049bfd58a827e272138d0cf08185519dfa744e2b2e9990b4cade3a49

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-08-2024 11:05

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General

Target

$TEMP/coyote.exe
Size

50KB
MD5

07b54aa737d16f89c80e6da5a2de5013
SHA1

bcad8a5a09597086ce2df3ed4d833ca6a188f12e
SHA256

e4ee0e4c5533fad0ece32849b37dec5c22ad662ce3dd1376880200eb6011de5f
SHA512

e92ed0a39dd645c60319739b86a06e7643cfb14f28eb6d1bb3ec97febf0405eb5ad4d3e6aaf3374bfebdeb1bbfa1371764790810aa904f1cd9f63b17c62fbe61
SSDEEP

768:EsPebzrf3MbrOcnT9c/onP99Fg7APq+As006t++yD:O3MXr99nP9zgsD100x+

Score

10^/10

formbook a8c credential_access discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

a8c

Decoy

kesslergroupinternational.net

elcarretazo.com

livbim.info

thamxop.net

abitur.expert

cidavidjoy.com

digitalkarwaan.com

hcave.com

foundbyjack.com

servicarpasjc.com

giaotrinh24h.com

ladasno.com

harrisxn.com

bestbtccasinos.info

australianflying.com

louboutinshoes.site

taohaomi.net

s5league-europe.com

lizhongysw.com

imizuspotsboxboxinggym.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral14/memory/3528-10010-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral14/memory/3528-10015-0x0000000000400000-0x000000000042A000-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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\-ZOTO = "C:\\Program Files (x86)\\G8pp0jlh\\u6xl-6nj8cdrtj0.exe"	chkdsk.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3528 set thread context of 3508	3528	cmd.exe	56
PID 4588 set thread context of 3508	4588	chkdsk.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\G8pp0jlh\u6xl-6nj8cdrtj0.exe	chkdsk.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\win.ini	coyote.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	coyote.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

description	ioc	Process
Key created	\Registry\User\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
1068	coyote.exe
3528	cmd.exe
3528	cmd.exe
3528	cmd.exe
3528	cmd.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe
4588	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1068	coyote.exe
3528	cmd.exe
3528	cmd.exe
3528	cmd.exe
4588	chkdsk.exe
4588	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3528	cmd.exe
Token: SeDebugPrivilege	4588	chkdsk.exe
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3508	Explorer.EXE

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86
PID 1068 wrote to memory of 3528	1068	coyote.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3508
- C:\Users\Admin\AppData\Local\Temp\$TEMP\coyote.exe
  "C:\Users\Admin\AppData\Local\Temp\$TEMP\coyote.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3528
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:4588
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\cmd.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3932
- - 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⤵
    - System Location Discovery: System Language Discovery
    PID:6012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
C:\Users\Admin\AppData\Roaming\N4NA3DEA\N4Nlogim.jpeg

Filesize
84KB

MD5
2a333386e9c2f22f0d38e625ee5287ff

SHA1
58fb538528f9f5446be8c51623a2466f76c63b51

SHA256
5d1989cc27299dbc995188c5ba2f098cd1fa58d94c01c41140effbce75d3c236

SHA512
192d116c270f9072e6721a95fa7023f1839cc886a8d0dda31d66fb1ef9fce0d1c0080b07ec7ff93a093439bacbeed744387f23b90f0481e8650a188235855a53

Download Submit
C:\Users\Admin\AppData\Roaming\N4NA3DEA\N4Nlogrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\N4NA3DEA\N4Nlogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\N4NA3DEA\N4Nlogrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
C:\Windows\win.ini

Filesize
131B

MD5
9848e4efb0abd437d65e6d3d1d973adb

SHA1
f427ac7c50b19f66658ae7f92cbaf21110b49a47

SHA256
c8b84add37da849977a84fe62badb6cb908be99769edb70d60bcd04c0aec2a3f

SHA512
f90f1f65b6b824a526469b8d739f733a54a7f485d8b5f680de7a35fac90786bf6ba5a0b1d62e139663c5ee73b8d687cf32d4ccf188e18c53084ec12d8c216b17

Download Submit
memory/1068-1-0x0000000000D80000-0x0000000000D81000-memory.dmp

Filesize
4KB

Download
memory/1068-2-0x0000000000DF0000-0x0000000000DF6000-memory.dmp

Filesize
24KB

Download
memory/1068-10007-0x0000000003180000-0x00000000031A2000-memory.dmp

Filesize
136KB

Download
memory/1068-0-0x0000000000D70000-0x0000000000D74000-memory.dmp

Filesize
16KB

Download
memory/3508-10013-0x0000000008B20000-0x0000000008C44000-memory.dmp

Filesize
1.1MB

Download
memory/3508-10016-0x0000000008B20000-0x0000000008C44000-memory.dmp

Filesize
1.1MB

Download
memory/3508-10019-0x0000000008FB0000-0x0000000009101000-memory.dmp

Filesize
1.3MB

Download
memory/3528-10015-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/3528-10011-0x0000000003800000-0x0000000003B4A000-memory.dmp

Filesize
3.3MB

Download
memory/3528-10010-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/3528-10008-0x0000000000D70000-0x0000000000D76000-memory.dmp

Filesize
24KB

Download
memory/4588-10014-0x0000000000D70000-0x0000000000D7A000-memory.dmp

Filesize
40KB

Download