formbook | 79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040

General

Target

prtprr.exe
Size

851KB
MD5

95a22e4bce7bd0a47c94cb47cb7e2d3a
SHA1

6d4efe018df36424c66b4a7337b2045fe2c8c03e
SHA256

79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040
SHA512

9b6e5b3ccca79f9847a4ebf27eb5eebeec5ba9988704ce863a30733fb5b7fb953d4769cb411f70bde387d89e7f75e7a9a2ca31c576a634c8a9b374ddbb7313bb
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLJoEanOS/H0Rvg/oh8qv60n:ffmMv6Ckr7Mny5QLJoEYOS/URvg/oY6

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2380-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2380-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/572-14-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2380	2264	prtprr.exe	31
PID 2380 set thread context of 1144	2380	svchost.exe	20
PID 572 set thread context of 1144	572	help.exe	20

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 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	prtprr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2380	svchost.exe
2380	svchost.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe
572	help.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2264	prtprr.exe
2380	svchost.exe
2380	svchost.exe
2380	svchost.exe
572	help.exe
572	help.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	svchost.exe
Token: SeDebugPrivilege	572	help.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2264	prtprr.exe
2264	prtprr.exe
1144	Explorer.EXE
1144	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2264	prtprr.exe
2264	prtprr.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2380	2264	prtprr.exe	31
PID 2264 wrote to memory of 2380	2264	prtprr.exe	31
PID 2264 wrote to memory of 2380	2264	prtprr.exe	31
PID 2264 wrote to memory of 2380	2264	prtprr.exe	31
PID 2264 wrote to memory of 2380	2264	prtprr.exe	31
PID 1144 wrote to memory of 572	1144	Explorer.EXE	33
PID 1144 wrote to memory of 572	1144	Explorer.EXE	33
PID 1144 wrote to memory of 572	1144	Explorer.EXE	33
PID 1144 wrote to memory of 572	1144	Explorer.EXE	33
PID 572 wrote to memory of 2860	572	help.exe	34
PID 572 wrote to memory of 2860	572	help.exe	34
PID 572 wrote to memory of 2860	572	help.exe	34
PID 572 wrote to memory of 2860	572	help.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Users\Admin\AppData\Local\Temp\prtprr.exe
  "C:\Users\Admin\AppData\Local\Temp\prtprr.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\prtprr.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2380
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3060
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:572
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2860

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

memory/572-13-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/572-14-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/572-12-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/1144-11-0x00000000050F0000-0x000000000523C000-memory.dmp

Filesize
1.3MB

Download
memory/1144-15-0x00000000050F0000-0x000000000523C000-memory.dmp

Filesize
1.3MB

Download
memory/1144-21-0x00000000044D0000-0x0000000004582000-memory.dmp

Filesize
712KB

Download
memory/1144-22-0x00000000044D0000-0x0000000004582000-memory.dmp

Filesize
712KB

Download
memory/1144-24-0x00000000044D0000-0x0000000004582000-memory.dmp

Filesize
712KB

Download
memory/2264-5-0x00000000002F0000-0x00000000002F4000-memory.dmp

Filesize
16KB

Download
memory/2380-10-0x0000000000140000-0x0000000000154000-memory.dmp

Filesize
80KB

Download
memory/2380-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2380-7-0x0000000000990000-0x0000000000C93000-memory.dmp

Filesize
3.0MB

Download
memory/2380-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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