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 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
Executes dropped EXE 1 IoCs

Processes:

nbeggsncal.exe

pid process

3604 nbeggsncal.exe

pid	process
3604	nbeggsncal.exe

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

Processes:

nbeggsncal.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	nbeggsncal.exe

Loads dropped DLL 1 IoCs

Processes:

nbeggsncal.exe

pid process

4216 nbeggsncal.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

nbeggsncal.exenbeggsncal.exehelp.exe

description	pid	process	target process
PID 3604 set thread context of 4216	3604	nbeggsncal.exe	nbeggsncal.exe
PID 4216 set thread context of 2832	4216	nbeggsncal.exe	Explorer.EXE
PID 1520 set thread context of 2832	1520	help.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4824 3604 WerFault.exe nbeggsncal.exe

pid	pid_target	process	target process
4824	3604	WerFault.exe	nbeggsncal.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

Processes:

nbeggsncal.exehelp.exe

pid	process
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
4216	nbeggsncal.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe
1520	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2832 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

nbeggsncal.exehelp.exe

pid process

4216 nbeggsncal.exe
4216 nbeggsncal.exe
4216 nbeggsncal.exe
1520 help.exe
1520 help.exe
1520 help.exe
1520 help.exe

pid	process
2832	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

nbeggsncal.exeExplorer.EXEhelp.exe

description	pid	process
Token: SeDebugPrivilege	4216	nbeggsncal.exe
Token: SeShutdownPrivilege	2832	Explorer.EXE
Token: SeCreatePagefilePrivilege	2832	Explorer.EXE
Token: SeShutdownPrivilege	2832	Explorer.EXE
Token: SeCreatePagefilePrivilege	2832	Explorer.EXE
Token: SeShutdownPrivilege	2832	Explorer.EXE
Token: SeCreatePagefilePrivilege	2832	Explorer.EXE
Token: SeDebugPrivilege	1520	help.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

formbook1.exenbeggsncal.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 4648 wrote to memory of 3604	4648	formbook1.exe	nbeggsncal.exe
PID 4648 wrote to memory of 3604	4648	formbook1.exe	nbeggsncal.exe
PID 4648 wrote to memory of 3604	4648	formbook1.exe	nbeggsncal.exe
PID 3604 wrote to memory of 4216	3604	nbeggsncal.exe	nbeggsncal.exe
PID 3604 wrote to memory of 4216	3604	nbeggsncal.exe	nbeggsncal.exe
PID 3604 wrote to memory of 4216	3604	nbeggsncal.exe	nbeggsncal.exe
PID 3604 wrote to memory of 4216	3604	nbeggsncal.exe	nbeggsncal.exe
PID 2832 wrote to memory of 1520	2832	Explorer.EXE	help.exe
PID 2832 wrote to memory of 1520	2832	Explorer.EXE	help.exe
PID 2832 wrote to memory of 1520	2832	Explorer.EXE	help.exe
PID 1520 wrote to memory of 4760	1520	help.exe	Firefox.exe
PID 1520 wrote to memory of 4760	1520	help.exe	Firefox.exe
PID 1520 wrote to memory of 4760	1520	help.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2832

C:\Users\Admin\AppData\Local\Temp\formbook1.exe
"C:\Users\Admin\AppData\Local\Temp\formbook1.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4648

C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe
"C:\Users\Admin\AppData\Local\Temp\nbeggsncal.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3604

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:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3604 -s 520
4⤵
- Program crash
PID:4824

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1520

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3604 -ip 3604
1⤵
PID:4772

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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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\nbeggsncal.exe
Filesize
131KB

MD5
669c2269eea6c11fd71038f0918193fb

SHA1
b2da793470b99bd215fbd9b3c7396ac402b068e9

SHA256
ba605ae9b548c05ffa985ddad9217cbdd99c1aecc83ce6e7cf36a162cb69938e

SHA512
0759ebe446901ab0974ff7cdac1b5517a7a739890a20858da93aaec94bd06bc4e6cb697b706864d78df044c41211990185b4bd9c00a24c616ce6004f371bc91c

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
memory/1520-146-0x0000000000D20000-0x0000000000D27000-memory.dmp

Filesize
28KB

Download
memory/1520-144-0x0000000000000000-mapping.dmp

Download
memory/1520-152-0x00000000007A0000-0x00000000007CD000-memory.dmp

Filesize
180KB

Download
memory/1520-149-0x0000000000F30000-0x0000000000FBF000-memory.dmp

Filesize
572KB

Download
memory/1520-148-0x0000000001190000-0x00000000014DA000-memory.dmp

Filesize
3.3MB

Download
memory/1520-147-0x00000000007A0000-0x00000000007CD000-memory.dmp

Filesize
180KB

Download
memory/2832-150-0x00000000082B0000-0x00000000083FB000-memory.dmp

Filesize
1.3MB

Download
memory/2832-143-0x00000000081A0000-0x00000000082A6000-memory.dmp

Filesize
1.0MB

Download
memory/2832-151-0x00000000081A0000-0x00000000082A6000-memory.dmp

Filesize
1.0MB

Download
memory/2832-153-0x00000000082B0000-0x00000000083FB000-memory.dmp

Filesize
1.3MB

Download
memory/3604-132-0x0000000000000000-mapping.dmp

Download
memory/4216-145-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4216-142-0x0000000000E70000-0x0000000000E80000-memory.dmp

Filesize
64KB

Download
memory/4216-141-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4216-140-0x00000000013C0000-0x000000000170A000-memory.dmp

Filesize
3.3MB

Download
memory/4216-137-0x0000000000000000-mapping.dmp

Download
memory/4216-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads