formbook | 6df68164866d5b1b6ac0f188ccfb12bceee5c013c411cacc8212ade1807015ad

General

Target

28095361.exe
Size

445KB
MD5

eb177fb227c18d784c930896b96223a4
SHA1

9b70ef7c4fb0c47a8a81e5b479cc21ddec5874b2
SHA256

6df68164866d5b1b6ac0f188ccfb12bceee5c013c411cacc8212ade1807015ad
SHA512

857e12e274d05645c0b94db4c915321dc72699a4f7ad611d348b6117aa45409cc8df1508f9e6808f64ed4e03d9f2a4fac7ef4ef8299af12c1e5722c1e0d90472
SSDEEP

12288:XNF12FRDkeuvdh6vX2UoJLtZAxSoklfwBX3wVDszvBUU:XNF12PIfdh6vX2tJKSokGwu

Score

10^/10

formbook yurm rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

yurm

Decoy

X06d1tis1GUX/R0g87Ud

BKiZ33D1P766GVXO1ZwV

lAFdjB7CSxGX8Trz

Gc7dWizTVxWX8Trz

tDkr9JAfi1OHAW1PGOageIp4

bCpMtHKU3mVp8BY5sQ==

7WKpsMWt8nsrhJClJeOZNg==

0A9KTlETQ86Cmd8k0o5NP5RwCg==

aJ61paNJztSp42c=

CrgoA8ySIOsytCbO1ZwV

i46SnHYDD9tTIHI=

XFRCRCjtFZeU3x4Rn3xfD5BnPz+RDA==

c4CZghuHvzW9A31gEz0d

QAjzz9qyRRWBNYseAI4M

Jpbmu4A1YvBvN3ruZgiRmJA5BCFd

PfoFXGNFhhuX8Trz

bqCfk0m8ApAl+Tm1Ms5Tb23IT7tS

z7INff7HNALxc5HWq2/ftrVR6A7R1zvTUQ==

m7IShV4LSFxbqxhrVsZ1Ig==

BHRp7q0gtoRuqBRnVsZ1Ig==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Loads dropped DLL 1 IoCs

Processes:

cmmon32.exe

pid process

328 cmmon32.exe

pid	process
328	cmmon32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

28095361.exeCasPol.execmmon32.exe

description	pid	process	target process
PID 1604 set thread context of 1868	1604	28095361.exe	CasPol.exe
PID 1868 set thread context of 1232	1868	CasPol.exe	Explorer.EXE
PID 328 set thread context of 1232	328	cmmon32.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

CasPol.execmmon32.exe

pid	process
1868	CasPol.exe
1868	CasPol.exe
1868	CasPol.exe
1868	CasPol.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe
328	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1232 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

CasPol.execmmon32.exe

pid process

1868 CasPol.exe
1868 CasPol.exe
1868 CasPol.exe
328 cmmon32.exe
328 cmmon32.exe
328 cmmon32.exe
328 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CasPol.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1868 CasPol.exe
Token: SeDebugPrivilege 328 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1232 Explorer.EXE
1232 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1232 Explorer.EXE
1232 Explorer.EXE

pid	process
1232	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1868	CasPol.exe
Token: SeDebugPrivilege	328	cmmon32.exe

pid	process
1232	Explorer.EXE
1232	Explorer.EXE

pid	process
1232	Explorer.EXE
1232	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

28095361.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1604 wrote to memory of 1868	1604	28095361.exe	CasPol.exe
PID 1232 wrote to memory of 328	1232	Explorer.EXE	cmmon32.exe
PID 1232 wrote to memory of 328	1232	Explorer.EXE	cmmon32.exe
PID 1232 wrote to memory of 328	1232	Explorer.EXE	cmmon32.exe
PID 1232 wrote to memory of 328	1232	Explorer.EXE	cmmon32.exe
PID 328 wrote to memory of 1380	328	cmmon32.exe	Firefox.exe
PID 328 wrote to memory of 1380	328	cmmon32.exe	Firefox.exe
PID 328 wrote to memory of 1380	328	cmmon32.exe	Firefox.exe
PID 328 wrote to memory of 1380	328	cmmon32.exe	Firefox.exe
PID 328 wrote to memory of 1380	328	cmmon32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1232

C:\Users\Admin\AppData\Local\Temp\28095361.exe
"C:\Users\Admin\AppData\Local\Temp\28095361.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1868

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:328

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1380

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
837KB

MD5
e1b58e0aa1b377a1d0e940660ad1ace1

SHA1
5afc7291b26855b1252b26381ebc85ed3cca218f

SHA256
1b98c006231d38524e2278a474c49274fe42e0bb1a31bcfda02e6e32f559b777

SHA512
9ce778bcb586638662b090910c4ceab3b64e16dfaf905a7581c1d349fecdf186995b3cc0dc8c6fc6e9761ea2831d7b14ac1619c2bd5ebc6d18015842e5d94aa2

Download Submit
memory/328-74-0x0000000076461000-0x0000000076463000-memory.dmp

Filesize
8KB

Download
memory/328-65-0x0000000000000000-mapping.dmp

Download
memory/328-68-0x0000000000D40000-0x0000000000D4D000-memory.dmp

Filesize
52KB

Download
memory/328-73-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/328-69-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/328-70-0x0000000002150000-0x0000000002453000-memory.dmp

Filesize
3.0MB

Download
memory/328-71-0x0000000000970000-0x00000000009FF000-memory.dmp

Filesize
572KB

Download
memory/1232-64-0x0000000004E80000-0x0000000004FCE000-memory.dmp

Filesize
1.3MB

Download
memory/1232-79-0x000007FEF68E0000-0x000007FEF6A23000-memory.dmp

Filesize
1.3MB

Download
memory/1232-80-0x000007FF09AF0000-0x000007FF09AFA000-memory.dmp

Filesize
40KB

Download
memory/1232-77-0x0000000006A70000-0x0000000006BD1000-memory.dmp

Filesize
1.4MB

Download
memory/1232-76-0x000007FF09AF0000-0x000007FF09AFA000-memory.dmp

Filesize
40KB

Download
memory/1232-75-0x000007FEF68E0000-0x000007FEF6A23000-memory.dmp

Filesize
1.3MB

Download
memory/1232-72-0x0000000006A70000-0x0000000006BD1000-memory.dmp

Filesize
1.4MB

Download
memory/1604-54-0x00000000008E0000-0x0000000000954000-memory.dmp

Filesize
464KB

Download
memory/1604-55-0x00000000004F0000-0x0000000000562000-memory.dmp

Filesize
456KB

Download
memory/1868-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1868-59-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1868-60-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1868-63-0x00000000001B0000-0x00000000001C0000-memory.dmp

Filesize
64KB

Download
memory/1868-62-0x0000000000B70000-0x0000000000E73000-memory.dmp

Filesize
3.0MB

Download
memory/1868-57-0x00000000004012B0-mapping.dmp

Download
memory/1868-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1868-67-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads