formbook | 0b9a2a5a1d8492d4f5bd8737cc9ff67e2d00c4c1b815da88a471661ce4f3dd10

General

Target

PROFORMA INVOICE.exe
Size

638KB
MD5

a3b8d59430deef4d59ec0d47a60af449
SHA1

4cb4bef74a68cb9a55c8eed369a7beea317e3840
SHA256

1339a93d8ca9b03d1b55ce0d283da6d320bf04fc515a8259597c635901c821d0
SHA512

402f97692a312b8a70ea22e585f13c1c81336a1a7845202f2368622c1a1422b25f779778227f3ab4ddcd250cd496821486918a8e73f6d527c4262d827fc11474
SSDEEP

6144:uGi+jGL0og4dDiXYOg8XQ5iiRHTjO0gBzxRmpwCxkZ6W6q/Ba:A1JiXXngQEHTxgBzxmwckZ67q/Y

Score

10^/10

formbook a6hj discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a6hj

Decoy

unlocking.solutions

porscheofac.com

alinadaubermont.com

firstcallindia.xyz

sanot.top

lamborghini.my.id

vbncbcbcncnbcnbcnbcncnb.net

firstclassescapes.com

bestblondehairstylist.com

cncdt.biz

finkeng.xyz

unitedbcttles.com

redbaby.store

5donline.com

theonewayclothing.com

jgcenterpriseholdings.com

hairshackvb.com

thepunchypineapple.com

fm-conseils.fr

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/3016-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3016-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3016-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2964-21-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2108	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	PROFORMA INVOICE.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2180 set thread context of 3016	2180	PROFORMA INVOICE.exe	31
PID 3016 set thread context of 1208	3016	PROFORMA INVOICE.exe	21
PID 3016 set thread context of 1208	3016	PROFORMA INVOICE.exe	21
PID 2964 set thread context of 1208	2964	raserver.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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PROFORMA INVOICE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3016	PROFORMA INVOICE.exe
3016	PROFORMA INVOICE.exe
3016	PROFORMA INVOICE.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe
2964	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3016	PROFORMA INVOICE.exe
3016	PROFORMA INVOICE.exe
3016	PROFORMA INVOICE.exe
3016	PROFORMA INVOICE.exe
2964	raserver.exe
2964	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3016	PROFORMA INVOICE.exe
Token: SeDebugPrivilege	2964	raserver.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 2180 wrote to memory of 3016	2180	PROFORMA INVOICE.exe	31
PID 1208 wrote to memory of 2964	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2964	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2964	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2964	1208	Explorer.EXE	32
PID 2964 wrote to memory of 2108	2964	raserver.exe	33
PID 2964 wrote to memory of 2108	2964	raserver.exe	33
PID 2964 wrote to memory of 2108	2964	raserver.exe	33
PID 2964 wrote to memory of 2108	2964	raserver.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe
  "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2180
- - C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe
    "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3016
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:2964
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2108

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\nsjDF1A.tmp\dvxpshe.dll

Filesize
66KB

MD5
45f315f24046abc7cbe07a0f08a500b4

SHA1
5fcbdb3743ac2497181bd800622b98033e0232bd

SHA256
231d2605fc4ba8b8abed10831692542931ad6e7f647225376723cf385695f1bf

SHA512
a2df0a846c508318eb0eee02921c7f345aaaed5fcc25bee179eb092586c145b8348fb232a22a349fe2bcfa9166778c5812062ce89782d7f8fb2de56497f10a31

Download Submit
memory/1208-12-0x00000000051E0000-0x00000000052E7000-memory.dmp

Filesize
1.0MB

Download
memory/1208-15-0x00000000051E0000-0x00000000052E7000-memory.dmp

Filesize
1.0MB

Download
memory/1208-16-0x0000000006790000-0x0000000006864000-memory.dmp

Filesize
848KB

Download
memory/1208-22-0x0000000006790000-0x0000000006864000-memory.dmp

Filesize
848KB

Download
memory/2180-7-0x0000000010010000-0x0000000010012000-memory.dmp

Filesize
8KB

Download
memory/2964-19-0x0000000000820000-0x000000000083C000-memory.dmp

Filesize
112KB

Download
memory/2964-20-0x0000000000820000-0x000000000083C000-memory.dmp

Filesize
112KB

Download
memory/2964-21-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/3016-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3016-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3016-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing