560b03c4ba18e5a443f74a69727db0eabac6f455bb836757d620cc51615a92ea

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18-03-2024 06:42

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General

Target

$R0/Uninstall Lunar Client.exe
Size

404KB
MD5

227c1f9fe7c7f6fb24a451a5ca84e722
SHA1

9c34be548c0b2affd930d05c1b315a5cbe9bca45
SHA256

bafcf2b563e935de1c9d2d55413d25b9a06a8ee8b4cdab49ba7bfe0bfb5c668a
SHA512

1fde79719e176eaa9f23211f9679d5406c219b2ae074227306001ea88c3c2f10c1ed1e0e52b10bc1e0ca9adc4cdc82d2da474ce7e59defaae816655ddc0fce66
SSDEEP

3072:Wn77v00hEoDEtauTsqBGeQIfxqxAjDsksbfVl1snhl+l2L0Sa9/l7a4vZAzLmDVH:W740IEa+J+Rql1DKs2t0EyL+ya2

Score

5^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

Un_A.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation Un_A.exe
Executes dropped EXE 1 IoCs

Processes:

Un_A.exe

pid process

896 Un_A.exe
Loads dropped DLL 6 IoCs

Processes:

Un_A.exe

pid process

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

System Information Discovery
T1082
Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery
T1057

Processes:

tasklist.exe

pid process

1924 tasklist.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Un_A.exetasklist.exe

pid process

896 Un_A.exe
896 Un_A.exe
1924 tasklist.exe
1924 tasklist.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tasklist.exe

description pid process

Token: SeDebugPrivilege 1924 tasklist.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	Un_A.exe

pid	process
896	Un_A.exe

pid	process
896	Un_A.exe
896	Un_A.exe
896	Un_A.exe
896	Un_A.exe
896	Un_A.exe
896	Un_A.exe

pid	process
1924	tasklist.exe

pid	process
896	Un_A.exe
896	Un_A.exe
1924	tasklist.exe
1924	tasklist.exe

description	pid	process
Token: SeDebugPrivilege	1924	tasklist.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Uninstall Lunar Client.exeUn_A.execmd.exe

description	pid	process	target process
PID 4644 wrote to memory of 896	4644	Uninstall Lunar Client.exe	Un_A.exe
PID 4644 wrote to memory of 896	4644	Uninstall Lunar Client.exe	Un_A.exe
PID 4644 wrote to memory of 896	4644	Uninstall Lunar Client.exe	Un_A.exe
PID 896 wrote to memory of 5108	896	Un_A.exe	cmd.exe
PID 896 wrote to memory of 5108	896	Un_A.exe	cmd.exe
PID 896 wrote to memory of 5108	896	Un_A.exe	cmd.exe
PID 5108 wrote to memory of 1924	5108	cmd.exe	tasklist.exe
PID 5108 wrote to memory of 1924	5108	cmd.exe	tasklist.exe
PID 5108 wrote to memory of 1924	5108	cmd.exe	tasklist.exe
PID 5108 wrote to memory of 3976	5108	cmd.exe	find.exe
PID 5108 wrote to memory of 3976	5108	cmd.exe	find.exe
PID 5108 wrote to memory of 3976	5108	cmd.exe	find.exe
PID 896 wrote to memory of 564	896	Un_A.exe	msedge.exe
PID 896 wrote to memory of 564	896	Un_A.exe	msedge.exe

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lunar Client.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lunar Client.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4644

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\$R0\
2⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:896

C:\Windows\SysWOW64\cmd.exe
cmd /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq Lunar Client.exe" | %SYSTEMROOT%\System32\find.exe "Lunar Client.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:5108

C:\Windows\SysWOW64\tasklist.exe
tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Lunar Client.exe"
4⤵
- Enumerates processes with tasklist
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1924

C:\Windows\SysWOW64\find.exe
C:\Windows\System32\find.exe "Lunar Client.exe"
4⤵
PID:3976

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://lunarclient.com/uninstaller/?installId=unknown
3⤵
PID:564

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=17 --mojo-platform-channel-handle=4780 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:1
1⤵
PID:5024

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=18 --mojo-platform-channel-handle=5720 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:1
1⤵
PID:60

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=5784 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
1⤵
PID:3948

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=20 --mojo-platform-channel-handle=5920 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:1
1⤵
PID:2376

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=21 --mojo-platform-channel-handle=6076 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:1
1⤵
PID:4040

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=22 --mojo-platform-channel-handle=4692 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:1
1⤵
PID:4248

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=6296 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
1⤵
PID:5208

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_search_indexer.mojom.SearchIndexerInterfaceBroker --lang=en-US --service-sandbox-type=search_indexer --message-loop-type-ui --no-appcompat-clear --mojo-platform-channel-handle=6344 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
1⤵
PID:6012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

Query Registry

T1012

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\nsu5E1F.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu5E1F.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu5E1F.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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C:\Users\Admin\AppData\Local\Temp\nsu5E1F.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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

Filesize
404KB

MD5
227c1f9fe7c7f6fb24a451a5ca84e722

SHA1
9c34be548c0b2affd930d05c1b315a5cbe9bca45

SHA256
bafcf2b563e935de1c9d2d55413d25b9a06a8ee8b4cdab49ba7bfe0bfb5c668a

SHA512
1fde79719e176eaa9f23211f9679d5406c219b2ae074227306001ea88c3c2f10c1ed1e0e52b10bc1e0ca9adc4cdc82d2da474ce7e59defaae816655ddc0fce66

Download Submit