354bf7f1899b9c1eec5cd0f24b75520ef811c12f22ad5e66ce595efcd26aea07

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 20:49

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General

Target

$1/1337/Ex.exe
Size

3.1MB
MD5

7afcb8667f1ec33f0cc084936a8a4044
SHA1

a2755123f3515fbfcbd5b1ab38c22fa757b8afa8
SHA256

2304cf3b3d0753318d60c2769c535a164d5f56ee0343c59ac616036d95e8ad71
SHA512

bc04b81c01df03b360c225709d2db3078d1fb45fc2a67713f5f5154d050c71e241c2c7590f510d9f7ac3a0a4bc820b3b171d96cb56d23c0496df184e527162b8
SSDEEP

98304:A5aFQWMH0wPoBn1ZPBIjKNMxCSz4Rg4MuykNt:A5aF1MHropPDuhg3z

Score

7^/10

Malware Config

Signatures

Drops startup file 1 IoCs

Processes:

csrss.com

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sys.url csrss.com
Executes dropped EXE 2 IoCs

Processes:

csrss.comcsrss.com

pid process

2404 csrss.com
2432 csrss.com
Loads dropped DLL 2 IoCs

Processes:

cmd.execsrss.com

pid process

2572 cmd.exe
2404 csrss.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXE

pid process

2536 PING.EXE
2644 PING.EXE
Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

csrss.comcsrss.com

pid process

2404 csrss.com
2404 csrss.com
2404 csrss.com
2432 csrss.com
2432 csrss.com
2432 csrss.com
Suspicious use of SendNotifyMessage 6 IoCs

Processes:

csrss.comcsrss.com

pid process

2404 csrss.com
2404 csrss.com
2404 csrss.com
2432 csrss.com
2432 csrss.com
2432 csrss.com

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sys.url	csrss.com

pid	process
2404	csrss.com
2432	csrss.com

pid	process
2572	cmd.exe
2404	csrss.com

pid	process
2536	PING.EXE
2644	PING.EXE

pid	process
2404	csrss.com
2404	csrss.com
2404	csrss.com
2432	csrss.com
2432	csrss.com
2432	csrss.com

pid	process
2404	csrss.com
2404	csrss.com
2404	csrss.com
2432	csrss.com
2432	csrss.com
2432	csrss.com

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

Ex.execmd.execmd.execsrss.comcsrss.com

description	pid	process	target process
PID 2228 wrote to memory of 2216	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2216	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2216	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2216	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2580	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2580	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2580	2228	Ex.exe	cmd.exe
PID 2228 wrote to memory of 2580	2228	Ex.exe	cmd.exe
PID 2580 wrote to memory of 2572	2580	cmd.exe	cmd.exe
PID 2580 wrote to memory of 2572	2580	cmd.exe	cmd.exe
PID 2580 wrote to memory of 2572	2580	cmd.exe	cmd.exe
PID 2580 wrote to memory of 2572	2580	cmd.exe	cmd.exe
PID 2572 wrote to memory of 2536	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2536	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2536	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2536	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2632	2572	cmd.exe	certutil.exe
PID 2572 wrote to memory of 2632	2572	cmd.exe	certutil.exe
PID 2572 wrote to memory of 2632	2572	cmd.exe	certutil.exe
PID 2572 wrote to memory of 2632	2572	cmd.exe	certutil.exe
PID 2572 wrote to memory of 2404	2572	cmd.exe	csrss.com
PID 2572 wrote to memory of 2404	2572	cmd.exe	csrss.com
PID 2572 wrote to memory of 2404	2572	cmd.exe	csrss.com
PID 2572 wrote to memory of 2404	2572	cmd.exe	csrss.com
PID 2572 wrote to memory of 2644	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2644	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2644	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2644	2572	cmd.exe	PING.EXE
PID 2404 wrote to memory of 2432	2404	csrss.com	csrss.com
PID 2404 wrote to memory of 2432	2404	csrss.com	csrss.com
PID 2404 wrote to memory of 2432	2404	csrss.com	csrss.com
PID 2404 wrote to memory of 2432	2404	csrss.com	csrss.com
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe
PID 2432 wrote to memory of 2428	2432	csrss.com	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\$1\1337\Ex.exe
"C:\Users\Admin\AppData\Local\Temp\$1\1337\Ex.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c echo pUVyOKPt
2⤵
PID:2216

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c mkdir C:\Users\Admin\AppData\Roaming\Sysfiles & cmd < XuGJAWtEjFqgoZUl.com
2⤵
- Suspicious use of WriteProcessMemory
PID:2580

C:\Windows\SysWOW64\cmd.exe
cmd
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2572

C:\Windows\SysWOW64\PING.EXE
ping -n 1 moLu.nnnbID
4⤵
- Runs ping.exe
PID:2536

C:\Windows\SysWOW64\certutil.exe
certutil -decode qTh.com y
4⤵
PID:2632

C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com
csrss.com y
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2404

C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com y
5⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2432

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
6⤵
PID:2428

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 30
4⤵
- Runs ping.exe
PID:2644

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\EWSiFeMZzkUETFRYRVL.com
Filesize
921KB

MD5
c317736793ef5129f12a3568cd679422

SHA1
e68b55969c5f2159c847a629fac3731c0c315d53

SHA256
cbb5d906c63cbcb891b35e53156b643ac26c5dec922f43b2fd121ccca60beb62

SHA512
69cb5fd5f1a30c3c786ca945b8de6a460d03605fc3416a3c33e69691603e1a43ad0cfefe9cd5d6af1a154b701ecf34526cc05d9235a4e38acf994eb0edb1a82c

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\XuGJAWtEjFqgoZUl.com
Filesize
398B

MD5
0047726ce0f38e02fda2068d7ff7ceff

SHA1
0702fd3e290b95b70b5fc3b70cdb57c808baceb7

SHA256
0423e080422306752ccf52e4639a8f6e58596176e730d10bd812012ccf4f296b

SHA512
00b525c341b3297e3b011065b32bab9d29eee920e7faebea93e4fcc4fef69b166c11c10291cc9ba9b931551eca3dc9ddae27b681c4d4423478ea3a65d29c7d83

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\ZcaqngYeMJ.com
Filesize
2.3MB

MD5
09cc8b02108c2ca6db6197e37b165a65

SHA1
9f245c5206ce171cfc288ed8bf05896d1b36a1f0

SHA256
89ad1822d2ee2d5e39d2e4aae2016562244f7ea43071c192e8989a3c2544d998

SHA512
d50c20b554dd85996f8b7432fb3d3668c3fbfcd77314a4adc476861373a0350b122be61ab1aa087153e45c48cf6a453d0829ccfa4786cf679ee3dccb7cffadae

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\csrss.com
Filesize
921KB

MD5
8ed172328f643375ac09b31ffba0eb63

SHA1
c6716e5e5a311f597e37c5660b0387ab8f77b2a0

SHA256
23e87924005aeef08ab3c9402aa749c0373ed9fa6c1706c13ca1df5ec33f8928

SHA512
79efbac3cbf2bbbf1b5572a3036845fd544210a01adf9850d22587df12fd84832e14e8f7e0476955a8d9bb42ff0be5ca4443cee8e83dc396e70d850e31c60938

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\qTh.com
Filesize
1.1MB

MD5
13a508782d30a527e997a64996920287

SHA1
4628a103700d13b6f3920b3a8a06e9757bf0a9eb

SHA256
e06ad6278f8cdccb51ed58aee3d6ba97bd770b2d8b827746e539770fc959354e

SHA512
cd860c7c8eea0faf0e62f1e695f60c02050c284617265f3e9c11dac4e4cbea34cb656719ae6bdeb39a36dd1446bb443cbcf9c9f4a595c1749f9088d7c082d142

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\y
Filesize
842KB

MD5
dbcc4336d132df084c59bbddff9693f5

SHA1
172d404379f6d288db4eacaa11bf0fa1ccffa451

SHA256
ea3b51ae7fb4264cd4aca28f02fa027bb25ce69a9ece5ff1f9f581b1ae62c84e

SHA512
d7209e47c9ef7e8f0db4bc736828e79d745415dde0dbaa7b4d5a21d6ee3406b139f3565cdcae16911c330d3ebbe1bcbe77f5e40d2313909a3b7b58697d3d4e34

Download Submit
memory/2428-27-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-28-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-29-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-83-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-81-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-33-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-82-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-55-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-54-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-51-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-49-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-47-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-45-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-43-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-41-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-35-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-104-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-98-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-96-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-92-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-88-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-85-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-79-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-75-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-72-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-68-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-65-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-32-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-62-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-59-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-57-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-56-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-31-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-53-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-52-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-50-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-106-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-48-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-46-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-44-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-42-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-40-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-39-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-38-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-37-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-36-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-103-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-101-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-99-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-34-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-95-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-93-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-91-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-89-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-86-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-78-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-76-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-73-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-71-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-69-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-66-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-63-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-60-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download
memory/2428-30-0x0000000000500000-0x0000000001500000-memory.dmp

Filesize
16.0MB

Download