32ff2ebeb10a5da89ebb941604d6c783543b4430951d6ab52b0e671f1f34d10f

Analysis

max time kernel
130s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 17:09

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General

Target

2fbae3d59c8c3af90baaa30cdd1cc9e8.exe
Size

97KB
MD5

2fbae3d59c8c3af90baaa30cdd1cc9e8
SHA1

5800b06b9d024a532aa4a44e2336eb6744762f73
SHA256

32ff2ebeb10a5da89ebb941604d6c783543b4430951d6ab52b0e671f1f34d10f
SHA512

f5f738e2a21bc745208c77bbcff6c29d06d6f3478590a75695d59b47e56d6794375a482cbee6bab279e7914c4b477cdad8a190ac26190889f3b1ee097e1475d6
SSDEEP

3072:9+eYMX7jf+i6JJ+2aylNK0qq/Ekqq/4Lb9XPc2+/pV:wXDi6y2/l00qvkqbLpc2c

Score

10^/10

evasion

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe

Executes dropped EXE 1 IoCs

pid	Process
1948	o.i.exe

Loads dropped DLL 2 IoCs

pid	Process
5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe
5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mo.I	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe
File created	C:\Windows\SysWOW64\letAo.ICo	CMD.exe
File opened for modification	C:\Windows\SysWOW64\letAo.ICo	CMD.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.esj	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.esj\ = "JSEFile"	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 4272	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	93
PID 5076 wrote to memory of 4272	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	93
PID 5076 wrote to memory of 4272	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	93
PID 5076 wrote to memory of 1948	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	92
PID 5076 wrote to memory of 1948	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	92
PID 5076 wrote to memory of 1948	5076	2fbae3d59c8c3af90baaa30cdd1cc9e8.exe	92

C:\Users\Admin\AppData\Local\Temp\2fbae3d59c8c3af90baaa30cdd1cc9e8.exe
"C:\Users\Admin\AppData\Local\Temp\2fbae3d59c8c3af90baaa30cdd1cc9e8.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Users\Admin\AppData\Local\Temp\o.i.exe
  "C:\Users\Admin\AppData\Local\Temp\o.i.exe" "C:\Users\Admin\AppData\Local\Temp\co.esj"
  2⤵
  - Executes dropped EXE
  PID:1948
- C:\Windows\SysWOW64\CMD.exe
  "C:\Windows\system32\CMD.exe" /c copy C:\Windows\system32\mo.I C:\Windows\system32\letAo.ICo /Y
  2⤵
  - Drops file in System32 directory
  PID:4272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\co.esj

Filesize
10KB

MD5
ca12d5cb1157a358b3372399d7f755a7

SHA1
58526974fa83dea844acd64290e13a2bcbaf96b7

SHA256
0b20b428e376bc266a1a6dbc5fc440ef2b3ef701de0dcba2da3f30aae5897163

SHA512
a51143d1de5fef5de5c2c5555449341629acd3b45cffdfe54a39db987f5d01c127f0439e110de8cca5eba0103bb1b40daaf2f445914bff5d4f65efdeb12300cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsvADA6.tmp\nsExec.dll

Filesize
6KB

MD5
4d9e573fe1168379555d0d55b0628d3b

SHA1
cd73704040704504fc61f8a1d0427cb1b9237854

SHA256
4ec84fe474f324244bfd050bb91a994ad3a7aadd9118baaed164ca5b74246409

SHA512
0a87b1a42f175dbb90eeda58a785e34fc83cc3f6743c8e880dfe563ae86d2255fe5db6e980060c67b4178ab2d4220f2049af43f1b9b1312f21ef02f18b307504

Download Submit
C:\Users\Admin\AppData\Local\Temp\o.I.exe

Filesize
144KB

MD5
ff00e0480075b095948000bdc66e81f0

SHA1
c2326cc50a739d3bc512bb65a24d42f1cde745c9

SHA256
8c767077bb410f95b1db237b31f4f6e1512c78c1f0120de3f215b501f6d1c7ea

SHA512
3a38e62dcb925411bc037335e46dfdd895c12a52ac43c47ef38db42d41d8358dfc2b1081a361367911d60ec5a3350ca734cf70ad57b21d39b23cfdec35b0aced

Download Submit
C:\Windows\SysWOW64\mo.I

Filesize
14KB

MD5
468fada123f5548ac87e57bae81f6782

SHA1
edb8f012c25906e6afd8bf335b495e16c440243d

SHA256
091c882bb307d57f2c7c42309e7ba8740130fef8c3ed772b0bc5e5505e37034d

SHA512
635ec26c88c2394dd4f2a81b9aea8f429a91adfeb37ae34e51b03f3cf8e503c123c3685938f40cea07d6146e0c7113aadbe62fa528f1f6d8b995e617fd68a4aa

Download Submit
memory/5076-0-0x0000000000400000-0x0000000000438200-memory.dmp

Filesize
224KB

Download
memory/5076-35-0x0000000000400000-0x0000000000438200-memory.dmp

Filesize
224KB

Download