formbook | b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65

General

Target

b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe
Size

303KB
MD5

32a789f533962a3b74537fe4648944ef
SHA1

5bd15035cb0c90346112c1ceaa51ae3c1f7cb7af
SHA256

b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65
SHA512

b67347465d70050a3b8c69e7019ff470ada290f9c80419f0e05006bee985dc8d4fd2dcf0f5f58ed66ace32f6fe71f9ba486e9a7abe02c87d70cff344d4c54937
SSDEEP

6144:pXFKo5lGhoBRQXvUv2K34mJgBNJGuOwIu/taVBrEFCfp9rJXoV6UzOLz3VcX+:pXRGhSv2OIP+w3/4VyopIc3LCX+

Score

10^/10

formbook sn26 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sn26

Decoy

resenha10.bet

gulshan-rajput.com

xbus.tech

z813my.cfd

wlxzjlny.cfd

auntengotiempo.com

canada-reservation.com

thegiftcompany.shop

esthersilveirapropiedades.com

1wapws.top

ymjblnvo.cfd

termokimik.net

kushiro-artist-school.com

bmmboo.com

caceresconstructionservices.com

kentuckywalkabout.com

bringyourcart.com

miamiwinetour.com

bobcatsocial.site

thirdmind.network

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2176-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2176-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2768-20-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
2292	yplqoz.exe
2176	yplqoz.exe

Loads dropped DLL 2 IoCs

pid	Process
2260	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe
2292	yplqoz.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 2176	2292	yplqoz.exe	31
PID 2176 set thread context of 1252	2176	yplqoz.exe	21
PID 2768 set thread context of 1252	2768	wlanext.exe	21

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	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yplqoz.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 31 IoCs

pid	Process
2176	yplqoz.exe
2176	yplqoz.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe
2768	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2292	yplqoz.exe
2176	yplqoz.exe
2176	yplqoz.exe
2176	yplqoz.exe
2768	wlanext.exe
2768	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	yplqoz.exe
Token: SeDebugPrivilege	2768	wlanext.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2292	2260	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe	30
PID 2260 wrote to memory of 2292	2260	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe	30
PID 2260 wrote to memory of 2292	2260	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe	30
PID 2260 wrote to memory of 2292	2260	b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe	30
PID 2292 wrote to memory of 2176	2292	yplqoz.exe	31
PID 2292 wrote to memory of 2176	2292	yplqoz.exe	31
PID 2292 wrote to memory of 2176	2292	yplqoz.exe	31
PID 2292 wrote to memory of 2176	2292	yplqoz.exe	31
PID 2292 wrote to memory of 2176	2292	yplqoz.exe	31
PID 1252 wrote to memory of 2768	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2768	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2768	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2768	1252	Explorer.EXE	32
PID 2768 wrote to memory of 540	2768	wlanext.exe	33
PID 2768 wrote to memory of 540	2768	wlanext.exe	33
PID 2768 wrote to memory of 540	2768	wlanext.exe	33
PID 2768 wrote to memory of 540	2768	wlanext.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Users\Admin\AppData\Local\Temp\b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe
  "C:\Users\Admin\AppData\Local\Temp\b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Users\Admin\AppData\Local\Temp\yplqoz.exe
    "C:\Users\Admin\AppData\Local\Temp\yplqoz.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2292
  - - C:\Users\Admin\AppData\Local\Temp\yplqoz.exe
      "C:\Users\Admin\AppData\Local\Temp\yplqoz.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2176
- 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:2768
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\yplqoz.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\baiotmx.bpc

Filesize
205KB

MD5
68c3fe74a85cb0ead600f407846e4e17

SHA1
40e150aeb28248c8f733969f370e67d13f6f310f

SHA256
b10abd78528031efd876392a0d09903f36be1b281d92ea8f6eafbfa85a9b8224

SHA512
d58fb1f09ffae3397a1fcdb4fe7f90f82741ad363c63edf1146678d5402e32673c3a01666d5050857ae10d752f12bd5ce27e3786f8a1dac6252928939aa12319

Download Submit
\Users\Admin\AppData\Local\Temp\yplqoz.exe

Filesize
167KB

MD5
c7e6dba02c269734255208e86e23fce8

SHA1
746596f46256c1752b7d101d0dc54d0baa64e29c

SHA256
8acf4c88e097cfcba3bfa08c24884c446bb943f5a3b5eb610f50db67574de771

SHA512
b7c9a608fc3a82fcd7cfa3c6c8f7be3af9d028ffcef1e680f20364796ef8c4351759be036320ed203f785a04b0acd11d0d49217b557b36b5b50264e2b9448abf

Download Submit
memory/1252-16-0x0000000002F90000-0x0000000003090000-memory.dmp

Filesize
1024KB

Download
memory/1252-21-0x0000000006BA0000-0x0000000006C7D000-memory.dmp

Filesize
884KB

Download
memory/1252-17-0x0000000006BA0000-0x0000000006C7D000-memory.dmp

Filesize
884KB

Download
memory/2176-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2176-12-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/2176-15-0x0000000000460000-0x0000000000475000-memory.dmp

Filesize
84KB

Download
memory/2176-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2292-6-0x0000000000170000-0x0000000000172000-memory.dmp

Filesize
8KB

Download
memory/2768-19-0x0000000000110000-0x0000000000126000-memory.dmp

Filesize
88KB

Download
memory/2768-18-0x0000000000110000-0x0000000000126000-memory.dmp

Filesize
88KB

Download
memory/2768-20-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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