formbook | 9148c87726f97b18e044b9059a608a3b809ae02a795d44c1609bff24232c45ac

General

Target

flWhrV1J6MAi1kS.exe
Size

345KB
MD5

61a281d6005afdcb7b9f25b16e71bff3
SHA1

a380e614531478c3adf122e78568308e8a46f5c5
SHA256

9148c87726f97b18e044b9059a608a3b809ae02a795d44c1609bff24232c45ac
SHA512

bc174c366bfefc2acabdaa9b7548a726db82ff408cc145d85d5d7b0400e129d6688aa07928e0dd0a0bdcb9e0598ce86f48c77f7fc2607bdbe440014463eb0f9f

Score

10^/10

formbook persistence rat rezer0 spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.spatren.com/k0f/

Decoy

uao2o.info

hehe2.net

beautyqueenstores.com

chataan.com

brazzers-shop.biz

evolutionareligion.com

laysusannausboko.com

idewweddings.com

superwebox.com

moviesfan.net

deal-mix.com

infrarotgrilltest.info

corelesseposrolls.com

mpbrandl-finetrade-gamma.com

statement-log-in.info

romita4harrison.com

cpateamconsultant.com

gxdiaoyu.com

motocenterlaba.com

mlrs1314.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3408-8-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/3408-9-0x000000000041E320-mapping.dmp	formbook
behavioral2/memory/580-10-0x0000000000000000-mapping.dmp	formbook

rezer0 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/4800-6-0x0000000005760000-0x0000000005794000-memory.dmp	rezer0

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	systray.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\CBMH5XPXTB = "C:\\Program Files (x86)\\Hanzxan\\jtd0ypspw.exe"	systray.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 3 IoCs

Processes:

flWhrV1J6MAi1kS.exeflWhrV1J6MAi1kS.exesystray.exe

description	pid	process	target process
PID 4800 set thread context of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 3408 set thread context of 3152	3408	flWhrV1J6MAi1kS.exe	Explorer.EXE
PID 580 set thread context of 3152	580	systray.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

systray.exe

description ioc process

File opened for modification C:\Program Files (x86)\Hanzxan\jtd0ypspw.exe systray.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Hanzxan\jtd0ypspw.exe	systray.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3341490333-719741536-2920803124-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

flWhrV1J6MAi1kS.exesystray.exe

pid	process
3408	flWhrV1J6MAi1kS.exe
3408	flWhrV1J6MAi1kS.exe
3408	flWhrV1J6MAi1kS.exe
3408	flWhrV1J6MAi1kS.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe
580	systray.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

flWhrV1J6MAi1kS.exesystray.exe

pid process

3408 flWhrV1J6MAi1kS.exe
3408 flWhrV1J6MAi1kS.exe
3408 flWhrV1J6MAi1kS.exe
580 systray.exe
580 systray.exe
580 systray.exe
580 systray.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

flWhrV1J6MAi1kS.exesystray.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3408	flWhrV1J6MAi1kS.exe
Token: SeDebugPrivilege	580	systray.exe
Token: SeShutdownPrivilege	3152	Explorer.EXE
Token: SeCreatePagefilePrivilege	3152	Explorer.EXE
Token: SeShutdownPrivilege	3152	Explorer.EXE
Token: SeCreatePagefilePrivilege	3152	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3152 Explorer.EXE

pid	process
3152	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

flWhrV1J6MAi1kS.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 4800 wrote to memory of 3408	4800	flWhrV1J6MAi1kS.exe	flWhrV1J6MAi1kS.exe
PID 3152 wrote to memory of 580	3152	Explorer.EXE	systray.exe
PID 3152 wrote to memory of 580	3152	Explorer.EXE	systray.exe
PID 3152 wrote to memory of 580	3152	Explorer.EXE	systray.exe
PID 580 wrote to memory of 844	580	systray.exe	cmd.exe
PID 580 wrote to memory of 844	580	systray.exe	cmd.exe
PID 580 wrote to memory of 844	580	systray.exe	cmd.exe
PID 580 wrote to memory of 1184	580	systray.exe	Firefox.exe
PID 580 wrote to memory of 1184	580	systray.exe	Firefox.exe
PID 580 wrote to memory of 1184	580	systray.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3152

C:\Users\Admin\AppData\Local\Temp\flWhrV1J6MAi1kS.exe
"C:\Users\Admin\AppData\Local\Temp\flWhrV1J6MAi1kS.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4800

C:\Users\Admin\AppData\Local\Temp\flWhrV1J6MAi1kS.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3408

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.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:580

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\flWhrV1J6MAi1kS.exe"
3⤵
PID:844

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1184

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\Roaming\8Q760--R\8Q7logim.jpeg
MD5
5eb85fc03e1eba1fdc2262321ff2e43c

SHA1
c6a84314c9ffbaed143f569c444b8a9b3c04f5a2

SHA256
496d47789638cb04422cc0ea52b6f5e6e3c76393031f9a6d5cb24241305acd27

SHA512
4fe0ce889914c81701b3e04e011c9e4763c08a392e08268472b9d889a09b90688fae5464b0f3c1e152c56715286fd86356275d40f37b22e6afbd05246c6dad3c

Download Submit
C:\Users\Admin\AppData\Roaming\8Q760--R\8Q7logrf.ini
MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\8Q760--R\8Q7logri.ini
MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\8Q760--R\8Q7logrv.ini
MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/580-11-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/580-15-0x00000000061C0000-0x00000000062DD000-memory.dmp

Filesize
1.1MB

Download
memory/580-14-0x0000000005570000-0x00000000056D2000-memory.dmp

Filesize
1.4MB

Download
memory/580-12-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/580-10-0x0000000000000000-mapping.dmp

Download
memory/844-13-0x0000000000000000-mapping.dmp

Download
memory/1184-17-0x00007FF6642D0000-0x00007FF664363000-memory.dmp

Filesize
588KB

Download
memory/1184-16-0x0000000000000000-mapping.dmp

Download
memory/1184-18-0x00007FF6642D0000-0x00007FF664363000-memory.dmp

Filesize
588KB

Download
memory/1184-19-0x00007FF6642D0000-0x00007FF664363000-memory.dmp

Filesize
588KB

Download
memory/3408-9-0x000000000041E320-mapping.dmp

Download
memory/3408-8-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4800-7-0x0000000005CB0000-0x0000000005CB1000-memory.dmp

Filesize
4KB

Download
memory/4800-6-0x0000000005760000-0x0000000005794000-memory.dmp

Filesize
208KB

Download
memory/4800-0-0x00000000739D0000-0x00000000740BE000-memory.dmp

Filesize
6.9MB

Download
memory/4800-5-0x00000000054E0000-0x00000000054E1000-memory.dmp

Filesize
4KB

Download
memory/4800-4-0x0000000001140000-0x000000000114F000-memory.dmp

Filesize
60KB

Download
memory/4800-3-0x0000000005110000-0x0000000005111000-memory.dmp

Filesize
4KB

Download
memory/4800-1-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads