formbook | b28433b134dfc7369d03c867c8bfdc1f133f922490d92ec2d60d3a6140a0a82b

General

Target

formbook1.exe
Size

433KB
MD5

9672b2beca3027b6f008dfc291d21777
SHA1

9dfa2b2cc3d1f04fd715068e9eee238d6b1ca5a7
SHA256

ba10a45e13a79398a5802c91636684e54e53f26409feed99e7c89bbbe0c720d3
SHA512

6396c39d4b9da16e541bb29659737d9841c5841c808c58a7d88accb35715d673820d63679ea0e0ff7642cd952158e11029b5fd689b0588cff8987816df3ccb2e
SSDEEP

6144:6bE/HUrUAGxkcrTRkHqqZMWq1cD8YGMOsPEF75noWa4zbzDp/TkLNlkDfkDSDr0x:6bkxJkKqx4rB75HpALLkD0SMx

Score

10^/10

formbook nrln discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

nrln

Decoy

IG7zJSm49UqTTuu/N/oTCIg=

CVLdAPgw0CRSMuZnRRU=

PiA5Z3umP2NyX81VGQhjWyS59nFYhXiG

5i6p4GeQqtBgNRfGNQ==

5984keYswxh8mGZHz4ipAHtQ

VNJaK4Gh0CrOvHpW/p353A==

71rEtrL2icToyKGhcWrTxjsFU5T98zeO

r3q1sy1iZaL+2XIUAob7yw==

9+83Qkrk/vV/jVXsDvoTCIg=

aMFAgYF1prov8/UErH/Y1A==

Alqtx/0rxwEbCLdudftl

ImCbnglBSUHF0mv2tTSP40bPeYao

s4DFNvAJ4GIJ+g==

phOa6mtS8QQICuZnRRU=

7TSu5vqRtB45EZtf4WDSTBHPeYao

ImPWqwUUIVWMQLyMbUab7tmspvNCcT8=

HF7jKjbGox2SAffTPw==

yAM3mOQot5l+cD0ikR5MGp8=

UYzW0/8z70JcQenVLidu1kLPeYao

OoCznp5UWz+hT9OBFXbfVhXPeYao

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	nbeggsncal.exe

Executes dropped EXE 2 IoCs

pid	Process
2944	nbeggsncal.exe
2792	nbeggsncal.exe

Loads dropped DLL 5 IoCs

pid	Process
1852	formbook1.exe
2944	nbeggsncal.exe
2944	nbeggsncal.exe
2872	nbeggsncal.exe
2784	netsh.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 2872	2944	nbeggsncal.exe	33
PID 2872 set thread context of 1240	2872	nbeggsncal.exe	21
PID 2784 set thread context of 1240	2784	netsh.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	formbook1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nbeggsncal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2872	nbeggsncal.exe
2872	nbeggsncal.exe
2872	nbeggsncal.exe
2872	nbeggsncal.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2872	nbeggsncal.exe
2872	nbeggsncal.exe
2872	nbeggsncal.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe
2784	netsh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	nbeggsncal.exe
Token: SeDebugPrivilege	2784	netsh.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1240	Explorer.EXE
1240	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1240	Explorer.EXE
1240	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 2944	1852	formbook1.exe	30
PID 1852 wrote to memory of 2944	1852	formbook1.exe	30
PID 1852 wrote to memory of 2944	1852	formbook1.exe	30
PID 1852 wrote to memory of 2944	1852	formbook1.exe	30
PID 2944 wrote to memory of 2792	2944	nbeggsncal.exe	32
PID 2944 wrote to memory of 2792	2944	nbeggsncal.exe	32
PID 2944 wrote to memory of 2792	2944	nbeggsncal.exe	32
PID 2944 wrote to memory of 2792	2944	nbeggsncal.exe	32
PID 2944 wrote to memory of 2872	2944	nbeggsncal.exe	33
PID 2944 wrote to memory of 2872	2944	nbeggsncal.exe	33
PID 2944 wrote to memory of 2872	2944	nbeggsncal.exe	33
PID 2944 wrote to memory of 2872	2944	nbeggsncal.exe	33
PID 2944 wrote to memory of 2872	2944	nbeggsncal.exe	33
PID 1240 wrote to memory of 2784	1240	Explorer.EXE	34
PID 1240 wrote to memory of 2784	1240	Explorer.EXE	34
PID 1240 wrote to memory of 2784	1240	Explorer.EXE	34
PID 1240 wrote to memory of 2784	1240	Explorer.EXE	34
PID 2784 wrote to memory of 1360	2784	netsh.exe	36
PID 2784 wrote to memory of 1360	2784	netsh.exe	36
PID 2784 wrote to memory of 1360	2784	netsh.exe	36
PID 2784 wrote to memory of 1360	2784	netsh.exe	36
PID 2784 wrote to memory of 1360	2784	netsh.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\formbook1.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook1.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1852
- - C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
    "C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2944
  - - C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
      "C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
      4⤵
      Executes dropped EXE
      PID:2792
  - - C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
      "C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
      4⤵
      Checks computer location settings
      Loads dropped DLL
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2872
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\SysWOW64\netsh.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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\cimrcc.g

Filesize
185KB

MD5
874dc59d7571e9ffa32c16740763a222

SHA1
cf2e6e6c8e7e3a2f4e1a348a289983a730b676fc

SHA256
da67c1628cfe982e5aa0995fd4c4f92a434e2e8a577941d7d9d0d8d1373a9183

SHA512
d4a8d8c5107cd029fd638f49efabee51d4a4167de260b998497f715fc80f205c03458bbf433c326b46b0fd647ba383df557015428b62457207bb335ce75cb41e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe

Filesize
131KB

MD5
669c2269eea6c11fd71038f0918193fb

SHA1
b2da793470b99bd215fbd9b3c7396ac402b068e9

SHA256
ba605ae9b548c05ffa985ddad9217cbdd99c1aecc83ce6e7cf36a162cb69938e

SHA512
0759ebe446901ab0974ff7cdac1b5517a7a739890a20858da93aaec94bd06bc4e6cb697b706864d78df044c41211990185b4bd9c00a24c616ce6004f371bc91c

Download Submit
C:\Users\Admin\AppData\Local\Temp\qzhglh.zo

Filesize
4KB

MD5
0bd04364eecd4445c14e6f6a52045245

SHA1
29cd354bba1a83d8e8342d2f7e13a90c87af59a4

SHA256
62cb82f57397ea5a5622f990d4729bc6838f5db0e17161080acf4fd46d0b751f

SHA512
efda83747836c79a852c0261c0843a3a55991c16fc16b6fd58e7cef3a3b0a4efe561c40b8701c9bb05b74792d273bbd75fd2818b7380a3aacb81a94729d7f6c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\rhvh0.zip

Filesize
498KB

MD5
8517bf92c0fd6228875ba74b2526b3b4

SHA1
7aa157feed160f7e207ce961aaee21e3075b3ab9

SHA256
536ad85a299f5f7afc36f5944ea55d9f32495491265bf1305a41b3667176998d

SHA512
929c686123eb405c258d3ece2466b69f641041c2e2b7a4c13c7efa58a6654b387ac1ee4f7c643e70c84b38eddf39eccc6f816420e731e899468c9ab0fb9a2732

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll

Filesize
949KB

MD5
38a3e021eb32c9976adaf0b3372080fc

SHA1
68e02803c646be21007d90bec841c176b82211fd

SHA256
8cde0275d60da0d11954f73c7c8862cfc4b306f61bb8b1ce14abe4a193af2652

SHA512
b886cc112f2750e7300b66f7242850659fa49fdc97f75aed376cb9f5440875f303a143bf8b51068ec42674f1ebe1dfcc40534f3a7aed3cc4d20f9274b9a66d18

Download Submit
memory/1240-27-0x0000000006AF0000-0x0000000006C90000-memory.dmp

Filesize
1.6MB

Download
memory/1240-35-0x0000000006980000-0x0000000006A5D000-memory.dmp

Filesize
884KB

Download
memory/1240-33-0x0000000006980000-0x0000000006A5D000-memory.dmp

Filesize
884KB

Download
memory/1240-20-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1240-21-0x0000000006AF0000-0x0000000006C90000-memory.dmp

Filesize
1.6MB

Download
memory/1240-32-0x0000000006980000-0x0000000006A5D000-memory.dmp

Filesize
884KB

Download
memory/2784-23-0x00000000017B0000-0x00000000017CB000-memory.dmp

Filesize
108KB

Download
memory/2784-26-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/2784-25-0x00000000017B0000-0x00000000017CB000-memory.dmp

Filesize
108KB

Download
memory/2784-81-0x0000000061E00000-0x0000000061ED7000-memory.dmp

Filesize
860KB

Download
memory/2872-24-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2872-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2872-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2872-17-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2944-9-0x0000000000200000-0x0000000000202000-memory.dmp

Filesize
8KB

Download

Analysis

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