84d12ea1b0b2818c8b6d41244b189fdc86d37e8d4771bfcae87b241d4d18d12a

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02/02/2023, 19:39

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General

Target

Uninstall Lunar Client.exe
Size

234KB
MD5

94cd5e8c004aecfae197f0ebd97276e1
SHA1

f0c289d8dd74bc33c273b397a4eb01c4cacfca78
SHA256

84d12ea1b0b2818c8b6d41244b189fdc86d37e8d4771bfcae87b241d4d18d12a
SHA512

07441a6475d4a7100dc45c152733346a0976d7f25c64b004f6e0fe0db16810cb83625f28e37cc799dd21a00878feadef3476cb709c3d62dfd25274c0aca44c0e
SSDEEP

6144:T740IQeeeeeeeeeeeeeeee7eeeeeeeeeeeeeezeeeeeeeeeeeeeeeeee7eeeeeeD:/xeeeeeeeeeeeeeeee7eeeeeeeeeeeeT

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2020	Un_A.exe

Loads dropped DLL 7 IoCs

pid	Process
1096	Uninstall Lunar Client.exe
2020	Un_A.exe
2020	Un_A.exe
2020	Un_A.exe
2020	Un_A.exe
2020	Un_A.exe
2020	Un_A.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2020	Un_A.exe
2020	Un_A.exe
2020	Un_A.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 2020	1096	Uninstall Lunar Client.exe	28
PID 1096 wrote to memory of 2020	1096	Uninstall Lunar Client.exe	28
PID 1096 wrote to memory of 2020	1096	Uninstall Lunar Client.exe	28
PID 1096 wrote to memory of 2020	1096	Uninstall Lunar Client.exe	28

C:\Users\Admin\AppData\Local\Temp\Uninstall Lunar Client.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall Lunar Client.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\~nsuA.tmp\Un_A.exe

Filesize
234KB

MD5
94cd5e8c004aecfae197f0ebd97276e1

SHA1
f0c289d8dd74bc33c273b397a4eb01c4cacfca78

SHA256
84d12ea1b0b2818c8b6d41244b189fdc86d37e8d4771bfcae87b241d4d18d12a

SHA512
07441a6475d4a7100dc45c152733346a0976d7f25c64b004f6e0fe0db16810cb83625f28e37cc799dd21a00878feadef3476cb709c3d62dfd25274c0aca44c0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
234KB

MD5
94cd5e8c004aecfae197f0ebd97276e1

SHA1
f0c289d8dd74bc33c273b397a4eb01c4cacfca78

SHA256
84d12ea1b0b2818c8b6d41244b189fdc86d37e8d4771bfcae87b241d4d18d12a

SHA512
07441a6475d4a7100dc45c152733346a0976d7f25c64b004f6e0fe0db16810cb83625f28e37cc799dd21a00878feadef3476cb709c3d62dfd25274c0aca44c0e

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
\Users\Admin\AppData\Local\Temp\nsd762.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

Download Submit
\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
234KB

MD5
94cd5e8c004aecfae197f0ebd97276e1

SHA1
f0c289d8dd74bc33c273b397a4eb01c4cacfca78

SHA256
84d12ea1b0b2818c8b6d41244b189fdc86d37e8d4771bfcae87b241d4d18d12a

SHA512
07441a6475d4a7100dc45c152733346a0976d7f25c64b004f6e0fe0db16810cb83625f28e37cc799dd21a00878feadef3476cb709c3d62dfd25274c0aca44c0e

Download Submit
memory/1096-54-0x0000000075671000-0x0000000075673000-memory.dmp

Filesize
8KB

Download