formbook | 9ffd8f5cd26f82289e8f54da8894460401044c0e8506a97a016bda281458d732

General

Target

Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe
Size

258KB
MD5

1ec9c287f61dee3f7cee2dc216e8596f
SHA1

2ce2bc72b3245447687fddc717dbc087573e9422
SHA256

0112b086f601e1d8a6d10ce4e798dd5eaf379127cb99d5a4b4f44ec708457ffd
SHA512

74568e623eec50754c1a0cf3e2db27e120777f8c80a80df94fac6f106b5b43d7a8a0f9b5375f86bdbc8122d49eac2127bb9167f2e6a7d658f2e9302fe8ab69e5
SSDEEP

6144:mbE/HUba5PBYCt37k0AUck3UcrhNQxy7bjTRuFsC42TjKoagrM0:mb/aLPtLk9rkEcrkxey82TjKzyp

Score

10^/10

formbook avcn discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

avcn

Decoy

iQqc+b5jHA+W

gCI4O82LSsNA9tLkneHk6qA=

3I2qv1ZVYff+1Eo=

1YmmfbWjsiHmYcYjSVTf

NBsHMXP19khOJt2KMTEHhw==

phGkJ+uyWGow/gNhAcfxpNU4GLuUgXFcOg==

76S4kOajAII72kw=

YuoJB0X0+/LJtxIjSVTf

dfwI3SsaGogqBAZ4xhUx4B2g+LiF8XoFNA==

DPZ6AvfogdqUiZUq5K+3Jqk=

hnICZyINthreqpPpaLz9gQ==

yVh1ZpxISCr6h8b+MA==

/8Tg3VE+R7A/Bte6oC7kz/g4mz8Ufa4=

Nb5SuHlc+kxwGO5Oig5THgechA==

/NLWvgr7IAXcxzuueX/s6wJXODEI

/niFcKdVbQHAqH2y

Gac4n4YyRhvRYuK6

RtRr4pSUsjjOu7qsuv9FFBTuiHQ=

u1p5bblp59M=

qmh/ZV4PTj/IiNezISd2YeWw

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\International\Geo\Nation	yzoczjnuz.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	yzoczjnuz.exe

Loads dropped DLL 3 IoCs

pid	Process
2876	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe
2700	yzoczjnuz.exe
2800	yzoczjnuz.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 2800	2700	yzoczjnuz.exe	31
PID 2800 set thread context of 1256	2800	yzoczjnuz.exe	21
PID 2800 set thread context of 1256	2800	yzoczjnuz.exe	21
PID 2620 set thread context of 1256	2620	cmstp.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	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yzoczjnuz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yzoczjnuz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe
2620	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2800	yzoczjnuz.exe
2620	cmstp.exe
2620	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	yzoczjnuz.exe
Token: SeDebugPrivilege	2620	cmstp.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2700	2876	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe	30
PID 2876 wrote to memory of 2700	2876	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe	30
PID 2876 wrote to memory of 2700	2876	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe	30
PID 2876 wrote to memory of 2700	2876	Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe	30
PID 2700 wrote to memory of 2800	2700	yzoczjnuz.exe	31
PID 2700 wrote to memory of 2800	2700	yzoczjnuz.exe	31
PID 2700 wrote to memory of 2800	2700	yzoczjnuz.exe	31
PID 2700 wrote to memory of 2800	2700	yzoczjnuz.exe	31
PID 2700 wrote to memory of 2800	2700	yzoczjnuz.exe	31
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32
PID 2800 wrote to memory of 2620	2800	yzoczjnuz.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1256
- C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe
  "C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref[A1RxGSqgxSF3] Priority payment Customer Ref[2000015497].exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2876
- - C:\Users\Admin\AppData\Local\Temp\yzoczjnuz.exe
    "C:\Users\Admin\AppData\Local\Temp\yzoczjnuz.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Users\Admin\AppData\Local\Temp\yzoczjnuz.exe
      "C:\Users\Admin\AppData\Local\Temp\yzoczjnuz.exe"
      4⤵
      Checks computer location settings
      Loads dropped DLL
      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:2800
    - - C:\Windows\SysWOW64\cmstp.exe
        
        "C:\Windows\SysWOW64\cmstp.exe"
        5⤵
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        
        PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\bsdyoglyqor.r

Filesize
185KB

MD5
1e4e5fe5153c59256f6178ac541e53d0

SHA1
1ca49ca82dc80310e017f1d7be8c1e36eba01d24

SHA256
1f68a8c3efb02d3cefb6e49d8dba71acb16bbeaaa1686913120ad42d2991626a

SHA512
98e8d172d897a16cc7ca47c1e9d9b91f36b16a48733ab6c4d79169d7ec72416ccb341c9474fbe56dec4c39f3f5ad31b7bd4611aaa00cc8786640c4bc56bf8ec1

Download Submit
C:\Users\Admin\AppData\Local\Temp\dwvjvng.jan

Filesize
4KB

MD5
bf9a3bdedbd39546a400d1cd1850b4aa

SHA1
c915bb9ad5ce4defd8c5cfee4433d1dde789120c

SHA256
6830feee189372fd3145f58ce1a7c38203b5ac35b326446980c607bfe129c355

SHA512
117d5bb80f1a12abff70d8979abb19a6ec7a5dfa9c87e307b4defcfefde36d99c031efba4455824ce2243ef5726d784f2aae99915966282b5a341dc063345d4b

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

Filesize
59KB

MD5
60ebe600e2d67c0877426dfd53be96d7

SHA1
83c0f3f77bec5df19f20ab0706ca736bd5e6e0d6

SHA256
fad978413cf6a36fbd03d3c96a5a08d0cf227e17710abddc06e73ae1913de648

SHA512
f0e2839211d84f2247a654f51ff07fe4c89f3d9ed71558e34479d8afe08aa9f606a65d1e53eaa0bea8287537de8f7e50427402f33a0339739b4dff7405a127eb

Download Submit
memory/1256-21-0x0000000003DC0000-0x0000000003E79000-memory.dmp

Filesize
740KB

Download
memory/1256-28-0x0000000006D30000-0x0000000006ED7000-memory.dmp

Filesize
1.7MB

Download
memory/1256-17-0x0000000003DC0000-0x0000000003E79000-memory.dmp

Filesize
740KB

Download
memory/1256-22-0x0000000006D30000-0x0000000006ED7000-memory.dmp

Filesize
1.7MB

Download
memory/2620-29-0x0000000000130000-0x000000000015D000-memory.dmp

Filesize
180KB

Download
memory/2620-27-0x00000000005B0000-0x00000000005C8000-memory.dmp

Filesize
96KB

Download
memory/2620-25-0x00000000005B0000-0x00000000005C8000-memory.dmp

Filesize
96KB

Download
memory/2700-9-0x0000000000230000-0x0000000000232000-memory.dmp

Filesize
8KB

Download
memory/2800-14-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2800-19-0x0000000000423000-0x0000000000424000-memory.dmp

Filesize
4KB

Download
memory/2800-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2800-26-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2800-18-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2800-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2800-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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