57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f

Analysis

max time kernel
146s
max time network
133s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 10:24

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General

Target

57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe
Size

2.8MB
MD5

a59c5cfff822ca337569eb73f9b33d02
SHA1

5df611f1f8e328c14c10ccd80818cc6d80891256
SHA256

57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f
SHA512

b021a1832f90b3a4d8e8187d2d9e5d6bdb8661cd9c4eab67248cf8f3c9a9a012b79b255eec38eb16a3675792bfd3026ffd9a5b8071f3d9bfac6c40ad76858861
SSDEEP

49152:zGFjrscUfO7otry1+K0ZLLyVvP1B94iJqoP8tsUM05:qFjrwfxZd2lBFjysUd5

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2764	is-4VB40.tmp
2600	OSJMount.exe
2984	OSJMount.exe

Loads dropped DLL 5 IoCs

pid	Process
2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe
2764	is-4VB40.tmp
2764	is-4VB40.tmp
2764	is-4VB40.tmp
2764	is-4VB40.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\OSJMount\OSJMount.exe	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-MV145.tmp	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-FSCCO.tmp	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-P6IGT.tmp	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-9LFIV.tmp	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\unins000.dat	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-OK249.tmp	is-4VB40.tmp
File created	C:\Program Files (x86)\OSJMount\is-T0DB5.tmp	is-4VB40.tmp
File opened for modification	C:\Program Files (x86)\OSJMount\unins000.dat	is-4VB40.tmp

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

System Information Discovery
T1082
Runs net.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2228 wrote to memory of 2764	2228	57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe	28
PID 2764 wrote to memory of 2512	2764	is-4VB40.tmp	31
PID 2764 wrote to memory of 2512	2764	is-4VB40.tmp	31
PID 2764 wrote to memory of 2512	2764	is-4VB40.tmp	31
PID 2764 wrote to memory of 2512	2764	is-4VB40.tmp	31
PID 2764 wrote to memory of 2600	2764	is-4VB40.tmp	33
PID 2764 wrote to memory of 2600	2764	is-4VB40.tmp	33
PID 2764 wrote to memory of 2600	2764	is-4VB40.tmp	33
PID 2764 wrote to memory of 2600	2764	is-4VB40.tmp	33
PID 2512 wrote to memory of 2564	2512	net.exe	34
PID 2512 wrote to memory of 2564	2512	net.exe	34
PID 2512 wrote to memory of 2564	2512	net.exe	34
PID 2512 wrote to memory of 2564	2512	net.exe	34
PID 2764 wrote to memory of 2984	2764	is-4VB40.tmp	35
PID 2764 wrote to memory of 2984	2764	is-4VB40.tmp	35
PID 2764 wrote to memory of 2984	2764	is-4VB40.tmp	35
PID 2764 wrote to memory of 2984	2764	is-4VB40.tmp	35

C:\Users\Admin\AppData\Local\Temp\57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe
"C:\Users\Admin\AppData\Local\Temp\57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\is-VQV34.tmp\is-4VB40.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-VQV34.tmp\is-4VB40.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\57d965820c0afad2617da9bf308739da512230d53d06072c9a761c2048b5826f.exe" 2672038 52224
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 27
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2512
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 27
      4⤵
      PID:2564
- - C:\Program Files (x86)\OSJMount\OSJMount.exe
    "C:\Program Files (x86)\OSJMount\OSJMount.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2600
- - C:\Program Files (x86)\OSJMount\OSJMount.exe
    "C:\Program Files (x86)\OSJMount\OSJMount.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\OSJMount\OSJMount.exe

Filesize
2.0MB

MD5
5912bbcdfa36233362763a4060ced585

SHA1
55be4167661d442b499ed9c5859b20b03538a348

SHA256
6a2ae59fd216c959c32afd32c291b5127a820ad50f46df15985d7b9e3d1ef1c6

SHA512
c6e50d0003dcdd16c815861053279067da0bb5dc9f6b7430c3eb0a7865d5b5416de295e83c2c0a1c862c7d6f956ca37c99db030fff092dec32d8974120969e86

Download Submit
C:\Program Files (x86)\OSJMount\OSJMount.exe

Filesize
2.0MB

MD5
5912bbcdfa36233362763a4060ced585

SHA1
55be4167661d442b499ed9c5859b20b03538a348

SHA256
6a2ae59fd216c959c32afd32c291b5127a820ad50f46df15985d7b9e3d1ef1c6

SHA512
c6e50d0003dcdd16c815861053279067da0bb5dc9f6b7430c3eb0a7865d5b5416de295e83c2c0a1c862c7d6f956ca37c99db030fff092dec32d8974120969e86

Download Submit
C:\Program Files (x86)\OSJMount\OSJMount.exe

Filesize
2.0MB

MD5
5912bbcdfa36233362763a4060ced585

SHA1
55be4167661d442b499ed9c5859b20b03538a348

SHA256
6a2ae59fd216c959c32afd32c291b5127a820ad50f46df15985d7b9e3d1ef1c6

SHA512
c6e50d0003dcdd16c815861053279067da0bb5dc9f6b7430c3eb0a7865d5b5416de295e83c2c0a1c862c7d6f956ca37c99db030fff092dec32d8974120969e86

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VQV34.tmp\is-4VB40.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VQV34.tmp\is-4VB40.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
\Program Files (x86)\OSJMount\OSJMount.exe

Filesize
2.0MB

MD5
5912bbcdfa36233362763a4060ced585

SHA1
55be4167661d442b499ed9c5859b20b03538a348

SHA256
6a2ae59fd216c959c32afd32c291b5127a820ad50f46df15985d7b9e3d1ef1c6

SHA512
c6e50d0003dcdd16c815861053279067da0bb5dc9f6b7430c3eb0a7865d5b5416de295e83c2c0a1c862c7d6f956ca37c99db030fff092dec32d8974120969e86

Download Submit
\Users\Admin\AppData\Local\Temp\is-3F24D.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-3F24D.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-3F24D.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-VQV34.tmp\is-4VB40.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
memory/2228-20-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2228-1-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2600-50-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2600-45-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2600-43-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2600-47-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2764-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2764-46-0x0000000003A70000-0x0000000003C7F000-memory.dmp

Filesize
2.1MB

Download
memory/2764-44-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2764-39-0x0000000003A70000-0x0000000003C7F000-memory.dmp

Filesize
2.1MB

Download
memory/2764-22-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2764-8-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2984-67-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-79-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-64-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-53-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-70-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-73-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-76-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-56-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-80-0x0000000002780000-0x00000000027C9000-memory.dmp

Filesize
292KB

Download
memory/2984-81-0x0000000002780000-0x00000000027C9000-memory.dmp

Filesize
292KB

Download
memory/2984-87-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-88-0x0000000002780000-0x00000000027C9000-memory.dmp

Filesize
292KB

Download
memory/2984-91-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download
memory/2984-94-0x0000000000400000-0x000000000060F000-memory.dmp

Filesize
2.1MB

Download