formbook | b28433b134dfc7369d03c867c8bfdc1f133f922490d92ec2d60d3a6140a0a82b

General

Target

nbeggsncal.exe
Size

131KB
MD5

669c2269eea6c11fd71038f0918193fb
SHA1

b2da793470b99bd215fbd9b3c7396ac402b068e9
SHA256

ba605ae9b548c05ffa985ddad9217cbdd99c1aecc83ce6e7cf36a162cb69938e
SHA512

0759ebe446901ab0974ff7cdac1b5517a7a739890a20858da93aaec94bd06bc4e6cb697b706864d78df044c41211990185b4bd9c00a24c616ce6004f371bc91c
SSDEEP

3072:BwL4Lf/x2dKZb/m4bhAPfUZMCn5OnUORrOhm1CsrTzx8iB10V:ikdpR/mm0c2RrhFrh8m0V

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-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\International\Geo\Nation	nbeggsncal.exe

Loads dropped DLL 1 IoCs

pid	Process
2328	control.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 3028	2532	nbeggsncal.exe	31
PID 3028 set thread context of 1208	3028	nbeggsncal.exe	21
PID 2328 set thread context of 1208	2328	control.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	nbeggsncal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	control.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	control.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3028	nbeggsncal.exe
3028	nbeggsncal.exe
3028	nbeggsncal.exe
3028	nbeggsncal.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
3028	nbeggsncal.exe
3028	nbeggsncal.exe
3028	nbeggsncal.exe
2328	control.exe
2328	control.exe
2328	control.exe
2328	control.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3028	nbeggsncal.exe
Token: SeDebugPrivilege	2328	control.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 3028	2532	nbeggsncal.exe	31
PID 2532 wrote to memory of 3028	2532	nbeggsncal.exe	31
PID 2532 wrote to memory of 3028	2532	nbeggsncal.exe	31
PID 2532 wrote to memory of 3028	2532	nbeggsncal.exe	31
PID 2532 wrote to memory of 3028	2532	nbeggsncal.exe	31
PID 1208 wrote to memory of 2328	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2328	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2328	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2328	1208	Explorer.EXE	32
PID 2328 wrote to memory of 2096	2328	control.exe	35
PID 2328 wrote to memory of 2096	2328	control.exe	35
PID 2328 wrote to memory of 2096	2328	control.exe	35
PID 2328 wrote to memory of 2096	2328	control.exe	35
PID 2328 wrote to memory of 2096	2328	control.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
  "C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
    "C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3028
- C:\Windows\SysWOW64\control.exe
  "C:\Windows\SysWOW64\control.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:2328
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2096

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

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

C:\Users\Admin\AppData\Local\Temp\v0mtuf.zip

Filesize
440KB

MD5
5d874a46532117f82095481976117fa1

SHA1
0a33fdef5084db25e24451dbde80238b487fbe78

SHA256
d6ccab1423559c6cf50202bc81a4576f969aa9c275eaaeb9a2ac2c827cd60447

SHA512
f0624277f3b4839c836291e1d1eb03cda875ba192243427afa967819b213f0cdade02f22e20b786b4680e4faaef20c045ad0a456d5f85fc04d3ab2e081ff4c61

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

Filesize
841KB

MD5
5fc6cd5d5ca1489d2a3c361717359a95

SHA1
5c630e232cd5761e7a611e41515be4afa3e7a141

SHA256
85c8b8a648c56cf5f063912e0e26ecebb90e0caf2f442fd5cdd8287301fe7e81

SHA512
5f9124a721f6b463d4f980920e87925098aa753b0fa2a59a3ff48b48d2b1a45d760fd46445414d84fb66321181cd2c82a4194361811114c15e35b42f838ab792

Download Submit
memory/1208-17-0x0000000005140000-0x0000000005235000-memory.dmp

Filesize
980KB

Download
memory/1208-12-0x0000000004FA0000-0x000000000513B000-memory.dmp

Filesize
1.6MB

Download
memory/1208-5-0x0000000003C10000-0x0000000003D10000-memory.dmp

Filesize
1024KB

Download
memory/1208-6-0x0000000004FA0000-0x000000000513B000-memory.dmp

Filesize
1.6MB

Download
memory/1208-20-0x0000000005140000-0x0000000005235000-memory.dmp

Filesize
980KB

Download
memory/1208-18-0x0000000005140000-0x0000000005235000-memory.dmp

Filesize
980KB

Download
memory/1208-13-0x0000000003F90000-0x0000000004190000-memory.dmp

Filesize
2.0MB

Download
memory/2328-11-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/2328-8-0x00000000001C0000-0x00000000001DF000-memory.dmp

Filesize
124KB

Download
memory/2328-10-0x00000000001C0000-0x00000000001DF000-memory.dmp

Filesize
124KB

Download
memory/2328-64-0x0000000061E00000-0x0000000061EBF000-memory.dmp

Filesize
764KB

Download
memory/2532-0-0x0000000000100000-0x0000000000102000-memory.dmp

Filesize
8KB

Download
memory/3028-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3028-9-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3028-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3028-2-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing