2bce9deb36bdeddf9741bd111dcff13a0ad527b56ec8a66518fc4d5da6f1c5b7

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
20/03/2024, 02:36

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General

Target

d7abdf205577c961251e5ba839893da0.exe
Size

13KB
MD5

d7abdf205577c961251e5ba839893da0
SHA1

5decf1ee6eadd16d0c5b1b60a45a8fa8cc103528
SHA256

2bce9deb36bdeddf9741bd111dcff13a0ad527b56ec8a66518fc4d5da6f1c5b7
SHA512

00c79f40518eb41264f02b665348fc4a29683d80c77a2178ac160bc8315557510c58cfb50e6eb472bfc034c3e81b42bf9c0f890dc90eb74342ca794d9bf773a2
SSDEEP

192:9ktEZ2i9iBJQTbF2qOPcLtSGDPYv85Cw7p9SvmmF1aE3jdlpZx9Wn5aAhhS9WDQ0:etEXUJPcSUl9w1HdZxA0MhS9Wc0

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\nsyvvcfo.dll = "{2CB77746-8ECC-40ca-8217-10CA8BE5EFC8}"	d7abdf205577c961251e5ba839893da0.exe

Loads dropped DLL 1 IoCs

pid	Process
3088	d7abdf205577c961251e5ba839893da0.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nsyvvcfo.tmp	d7abdf205577c961251e5ba839893da0.exe
File opened for modification	C:\Windows\SysWOW64\nsyvvcfo.tmp	d7abdf205577c961251e5ba839893da0.exe
File opened for modification	C:\Windows\SysWOW64\nsyvvcfo.nls	d7abdf205577c961251e5ba839893da0.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2CB77746-8ECC-40ca-8217-10CA8BE5EFC8}	d7abdf205577c961251e5ba839893da0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2CB77746-8ECC-40ca-8217-10CA8BE5EFC8}\InProcServer32	d7abdf205577c961251e5ba839893da0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2CB77746-8ECC-40ca-8217-10CA8BE5EFC8}\InProcServer32\ = "C:\\Windows\\SysWow64\\nsyvvcfo.dll"	d7abdf205577c961251e5ba839893da0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2CB77746-8ECC-40ca-8217-10CA8BE5EFC8}\InProcServer32\ThreadingModel = "Apartment"	d7abdf205577c961251e5ba839893da0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3088	d7abdf205577c961251e5ba839893da0.exe
3088	d7abdf205577c961251e5ba839893da0.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3088	d7abdf205577c961251e5ba839893da0.exe
3088	d7abdf205577c961251e5ba839893da0.exe
3088	d7abdf205577c961251e5ba839893da0.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3088 wrote to memory of 3344	3088	d7abdf205577c961251e5ba839893da0.exe	96
PID 3088 wrote to memory of 3344	3088	d7abdf205577c961251e5ba839893da0.exe	96
PID 3088 wrote to memory of 3344	3088	d7abdf205577c961251e5ba839893da0.exe	96

C:\Users\Admin\AppData\Local\Temp\d7abdf205577c961251e5ba839893da0.exe
"C:\Users\Admin\AppData\Local\Temp\d7abdf205577c961251e5ba839893da0.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\DA62.tmp.bat
  2⤵
  PID:3344

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4788 --field-trial-handle=2232,i,9772508353233483703,11473701862007458502,262144 --variations-seed-version /prefetch:8
1⤵
PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DA62.tmp.bat

Filesize
179B

MD5
1159dcec0497b039ef3cdd4ede179e69

SHA1
20081aa6e97ccf7b686b3b22843b7d4619927b39

SHA256
e175aedf73cccaf6e45754513d7686f80a9ae0a9c7605c4dc8df9b9397fd3026

SHA512
a66248d23f79da9d399b43e1926e0afd69fe6936f5aa9d5b7cadc10e2db3056de832763d9d0efd9d9d0a5127f1b68ae03f5ae3c7d429c04afbc10e3687ef916b

Download Submit
C:\Windows\SysWOW64\nsyvvcfo.nls

Filesize
428B

MD5
249211d24809ab715c8ec1ceb6c97cc4

SHA1
e69440b857f83f74fa9a71c132dd60e9c6e583ff

SHA256
9288bbd417ccf3d63abd1724061f711128d64cc826cb865f59bfc2352a74bfe4

SHA512
ce5f716b1093741f24f6364e18bc98c893500381e802c78d513309e50abd27c26edebed7bb3da6dab412d7d53ceb9aff2f809e2e28376ffa2e02747660e64d7a

Download Submit
C:\Windows\SysWOW64\nsyvvcfo.tmp

Filesize
2.1MB

MD5
90137076490e6a07b34b5fd8c1b88779

SHA1
4729160fb125dc411af0b109362769525770299a

SHA256
dabcfd8947397d499fecf530469e68513e522b02929c76eb2d8049003a60a7b9

SHA512
dcd54a8eadacbfe9007ff26a79046cd3c9f0eba48577eede5c63a344986adfd21bf2b6a97069700a8c2e6e2428cd4434a33338b17b6e0b000d57a48d05e2084b

Download Submit
memory/3088-17-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/3088-21-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download