formbook | b2375324fd8e56728fc6ef7b5ad904e31b570e0f477b6da53e653d1c217226f8

General

Target

PO.2072022.xls.exe
Size

694KB
MD5

bc93bad913319b8e17505dd550d44467
SHA1

887d95d807bf45af676f1e827b77dd5c2c5ef9b9
SHA256

bbb957f9271b7de5007376f0a05fd7669f1dcfe7ab920b1a6851f7690dc5d4fc
SHA512

18c72dd92fa59469f8e40bc69bc4d932136f77d7e657642763055f6d7d619b63d865d90173f6c350cef9f5c15901fc57224551b55acc0bf0c106d9cc58b2f903
SSDEEP

12288:1ulhUQKIoqbDYhwsyH4kKpbf8SLn9Qu/ejCuuSZkJafY2Pf1NTqcigP:1uzKIoqbkhwV3Mwo9Qu/eduSKMfY231d

Score

10^/10

formbook v18s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

v18s

Decoy

elixirblog.com

foodweightedblanket.com

jillianjenna.com

dappsudhampur.com

pro-mesh.com

xn--wnu.xyz

americaniberians.com

simosimo09.com

abonnementenpause044.info

rentlakehome.com

orbeltheloanofficer.com

kuaileshen.com

ijoslca.com

honorsongs.net

templew.xyz

shmhz.com

airboat-alligator.site

lanearto.com

upscalekitchenbath.com

kumamoto0930.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2736-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2736-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2736-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2360-28-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
788	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2416 set thread context of 2736	2416	PO.2072022.xls.exe	31
PID 2736 set thread context of 1208	2736	PO.2072022.xls.exe	21
PID 2736 set thread context of 1208	2736	PO.2072022.xls.exe	21
PID 2360 set thread context of 1208	2360	wlanext.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	PO.2072022.xls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2416	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe
2360	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2736	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2736	PO.2072022.xls.exe
2360	wlanext.exe
2360	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2416	PO.2072022.xls.exe
Token: SeDebugPrivilege	2736	PO.2072022.xls.exe
Token: SeDebugPrivilege	2360	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 2416 wrote to memory of 2736	2416	PO.2072022.xls.exe	31
PID 1208 wrote to memory of 2360	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2360	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2360	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2360	1208	Explorer.EXE	32
PID 2360 wrote to memory of 788	2360	wlanext.exe	33
PID 2360 wrote to memory of 788	2360	wlanext.exe	33
PID 2360 wrote to memory of 788	2360	wlanext.exe	33
PID 2360 wrote to memory of 788	2360	wlanext.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\PO.2072022.xls.exe
  "C:\Users\Admin\AppData\Local\Temp\PO.2072022.xls.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\Users\Admin\AppData\Local\Temp\PO.2072022.xls.exe
    "C:\Users\Admin\AppData\Local\Temp\PO.2072022.xls.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2736
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PO.2072022.xls.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1208-20-0x00000000052B0000-0x00000000053E9000-memory.dmp

Filesize
1.2MB

Download
memory/1208-24-0x0000000006830000-0x00000000069C3000-memory.dmp

Filesize
1.6MB

Download
memory/1208-25-0x00000000052B0000-0x00000000053E9000-memory.dmp

Filesize
1.2MB

Download
memory/1208-29-0x0000000006830000-0x00000000069C3000-memory.dmp

Filesize
1.6MB

Download
memory/2360-27-0x0000000000550000-0x0000000000566000-memory.dmp

Filesize
88KB

Download
memory/2360-26-0x0000000000550000-0x0000000000566000-memory.dmp

Filesize
88KB

Download
memory/2360-28-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2416-8-0x00000000049E0000-0x0000000004A54000-memory.dmp

Filesize
464KB

Download
memory/2416-7-0x0000000005800000-0x00000000058AA000-memory.dmp

Filesize
680KB

Download
memory/2416-6-0x00000000002B0000-0x00000000002BA000-memory.dmp

Filesize
40KB

Download
memory/2416-5-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2416-4-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/2416-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/2416-15-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2416-3-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2416-2-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/2416-1-0x0000000000E60000-0x0000000000F12000-memory.dmp

Filesize
712KB

Download
memory/2736-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-23-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/2736-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-19-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2736-16-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/2736-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing