formbook | 94ddeb299ca04b590ae0c67238d000d5212dc6302d97d00a79fbcbb1aa8ba4ae

General

Target

VNXCNVCVCXJKGSD.exe
Size

289KB
MD5

903d0bd798ca8a3387247fb7c17c86d3
SHA1

bb423a6d299a6b706c63dcf0d793bfdc34ff4bda
SHA256

aa5a2cc65f212e1ca681e2cdc53fa73dabca4b15ad8319cf07cfae6b513dc6ef
SHA512

71c260fa5e7267b3f719689f4295a025941401896f01057e692820b46fe682e7ee5861d183aa96e16d67c91d4fc9f79e01af4fcab56ca09ee00a8343b2dec6e6
SSDEEP

6144:K5BzJCUXtLVxYv1vUF/LGhOzVGboBQvJwrJj/VpTQj2HZ:0rtrBF/bzV1QBSJj/Uj25

Score

10^/10

formbook oc5e discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

oc5e

Decoy

ODVenWNCx27xmAQc

4XFONwe0gAX06UZqkA==

AD3Pph7KlPo7lQ==

UR3vF7OcYyyilfE=

dYHbq1q35dWIhecnJZ3aFJEGlDwKDoVM

ZjGUfBForJkYdek=

eHXQr1tI+ySegwM4iBtUkk4KNg0FYMk=

4a8FTkEp+vCjm+4=

aCWI49e/KcsQ8E+EU4GeShabmBah

E6V1p68mgTWfSkhOiA==

iWj9y0Sg3MU2lw==

oHsJ45Ot5v14oRA8Ut6Tqxw=

trdTtZNlNF+VuwQU

tEUYVnll1L4ojA==

Es81jGdN1YW3luwCr3T+WFk0wA==

g5eqC/tlYmtjxxJjnZM4

lFju1HzZ7iWVxxEe

4KE7NhR0YoW9Wllpmw==

qWVEpocCITjplgcphg==

FuCHb/9aumc7

Signatures

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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2084 set thread context of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 796 set thread context of 1172	796	Regsvcs.exe	21
PID 2664 set thread context of 1172	2664	cmmon32.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	VNXCNVCVCXJKGSD.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
796	Regsvcs.exe
796	Regsvcs.exe
796	Regsvcs.exe
796	Regsvcs.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe
2664	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
796	Regsvcs.exe
796	Regsvcs.exe
796	Regsvcs.exe
2664	cmmon32.exe
2664	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	796	Regsvcs.exe
Token: SeDebugPrivilege	2664	cmmon32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 2084 wrote to memory of 796	2084	VNXCNVCVCXJKGSD.exe	31
PID 1172 wrote to memory of 2664	1172	Explorer.EXE	32
PID 1172 wrote to memory of 2664	1172	Explorer.EXE	32
PID 1172 wrote to memory of 2664	1172	Explorer.EXE	32
PID 1172 wrote to memory of 2664	1172	Explorer.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\VNXCNVCVCXJKGSD.exe
  "C:\Users\Admin\AppData\Local\Temp\VNXCNVCVCXJKGSD.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:796
- 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
  PID:2664

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/796-15-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download
memory/796-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/796-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/796-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/796-12-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/796-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/796-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/796-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1172-21-0x0000000004E50000-0x0000000004F30000-memory.dmp

Filesize
896KB

Download
memory/1172-16-0x0000000004E50000-0x0000000004F30000-memory.dmp

Filesize
896KB

Download
memory/2084-2-0x00000000002F0000-0x00000000002FC000-memory.dmp

Filesize
48KB

Download
memory/2084-4-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/2084-11-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/2084-0-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/2084-1-0x00000000008C0000-0x000000000090C000-memory.dmp

Filesize
304KB

Download
memory/2084-3-0x0000000000300000-0x0000000000308000-memory.dmp

Filesize
32KB

Download
memory/2664-17-0x0000000000FF0000-0x0000000000FFD000-memory.dmp

Filesize
52KB

Download
memory/2664-19-0x0000000000FF0000-0x0000000000FFD000-memory.dmp

Filesize
52KB

Download
memory/2664-20-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download

Analysis

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