formbook | 7dbfe3e815092dfd471861a962bbb464ec76438144f4cb5dd031b02eda2f8ea9

General

Target

tTbQa71UeNsVrSr.exe
Size

658KB
MD5

cab065bec52b2ff086ef33b66a87213d
SHA1

3b7dcaad22ba6adf5da170ecdc6c96975f47055d
SHA256

7dbfe3e815092dfd471861a962bbb464ec76438144f4cb5dd031b02eda2f8ea9
SHA512

eca654e71054401cabe7b4c573abc39c578e4c16b985f8762d5e47191ac0d0c30549969a88e9c95ee5ef2942656bbf1a2874a6cdab3febf47c81dba68c39c262
SSDEEP

12288:s0mt8/WAgeS8+dypaxRF/Q4sZjEoXNVT7YS6IXD0:sXomh8+EG/ANVT7YS62

Score

10^/10

formbook b31a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b31a

Decoy

enjamin-paaac.buzz

mail-marketing-40950.bond

pusems28-post.cyou

hindo.top

ruck-company-be.today

asinos-deutschland.net

ewancash.boats

etdopovo.casino

rcher-saaac.buzz

871166.vip

manuel.app

g3yqo.shop

-9way.xyz

qawgytfexe.bond

iefi6834.vip

ental-health-35901.bond

idat-merkez18.top

rojectleadzone.website

lirudolph.top

migloballlc.online

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2688-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2688-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2688-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2056-27-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2984	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1076 set thread context of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 2688 set thread context of 1240	2688	tTbQa71UeNsVrSr.exe	21
PID 2688 set thread context of 1240	2688	tTbQa71UeNsVrSr.exe	21
PID 2056 set thread context of 1240	2056	cmmon32.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	tTbQa71UeNsVrSr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1076	tTbQa71UeNsVrSr.exe
1076	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe
2056	cmmon32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2688	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2688	tTbQa71UeNsVrSr.exe
2056	cmmon32.exe
2056	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1076	tTbQa71UeNsVrSr.exe
Token: SeDebugPrivilege	2688	tTbQa71UeNsVrSr.exe
Token: SeDebugPrivilege	2056	cmmon32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1076 wrote to memory of 2688	1076	tTbQa71UeNsVrSr.exe	30
PID 1240 wrote to memory of 2056	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2056	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2056	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2056	1240	Explorer.EXE	32
PID 2056 wrote to memory of 2984	2056	cmmon32.exe	33
PID 2056 wrote to memory of 2984	2056	cmmon32.exe	33
PID 2056 wrote to memory of 2984	2056	cmmon32.exe	33
PID 2056 wrote to memory of 2984	2056	cmmon32.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\tTbQa71UeNsVrSr.exe
  "C:\Users\Admin\AppData\Local\Temp\tTbQa71UeNsVrSr.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Users\Admin\AppData\Local\Temp\tTbQa71UeNsVrSr.exe
    "C:\Users\Admin\AppData\Local\Temp\tTbQa71UeNsVrSr.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2688
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:2056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\tTbQa71UeNsVrSr.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2984

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

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Downloads

memory/1076-6-0x0000000005C50000-0x0000000005CC6000-memory.dmp

Filesize
472KB

Download
memory/1076-0-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/1076-2-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/1076-3-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1076-4-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/1076-5-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/1076-1-0x0000000000920000-0x00000000009CA000-memory.dmp

Filesize
680KB

Download
memory/1076-14-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/1240-28-0x00000000050A0000-0x00000000051D7000-memory.dmp

Filesize
1.2MB

Download
memory/1240-19-0x0000000004F50000-0x000000000509D000-memory.dmp

Filesize
1.3MB

Download
memory/1240-24-0x00000000050A0000-0x00000000051D7000-memory.dmp

Filesize
1.2MB

Download
memory/1240-23-0x0000000004F50000-0x000000000509D000-memory.dmp

Filesize
1.3MB

Download
memory/2056-27-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/2056-25-0x00000000003D0000-0x00000000003DD000-memory.dmp

Filesize
52KB

Download
memory/2056-26-0x00000000003D0000-0x00000000003DD000-memory.dmp

Filesize
52KB

Download
memory/2688-15-0x00000000009D0000-0x0000000000CD3000-memory.dmp

Filesize
3.0MB

Download
memory/2688-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-18-0x0000000000430000-0x0000000000444000-memory.dmp

Filesize
80KB

Download
memory/2688-22-0x0000000000470000-0x0000000000484000-memory.dmp

Filesize
80KB

Download
memory/2688-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2688-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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