2f8c8adc872d77bf4cbc46bd3f197fe9a3f71f511b3bb9e8af96f83fd7f509e6

Resubmissions

29-10-2024 22:04

241029-1yx95a1aqg 10

25-07-2024 19:49

240725-yjp9vs1bmr 10

Analysis

max time kernel
40s
max time network
51s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25-07-2024 19:49

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General

Target

retun.exe
Size

200.0MB
MD5

57bfb36b08a68eacecc64d77211b69b9
SHA1

db6ef4199dc49868b3bf713915057e6721c8b7e5
SHA256

2f8c8adc872d77bf4cbc46bd3f197fe9a3f71f511b3bb9e8af96f83fd7f509e6
SHA512

bcb3119f72bda2b9a247bb695154055ad74708eb444d2bd25400847fe8112da9b8210d0df94f71b4daec18776ca1948d8702f17f766234830d0a4dcf811f2f7a
SSDEEP

196608:1W++z9hoy6EnWLL0kiR+dy/YXsK0hn6ksV5:1WXRWyuPMR+dyLhO5

Score

7^/10

discovery upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0005000000019622-22.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2640	retun.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0005000000019622-22.dat	upx
behavioral1/memory/2640-24-0x0000000074C50000-0x000000007515B000-memory.dmp	upx

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retun.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retun.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2200	chrome.exe
2200	chrome.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2200	chrome.exe
Token: SeShutdownPrivilege	2200	chrome.exe
Token: SeShutdownPrivilege	2200	chrome.exe
Token: SeShutdownPrivilege	2200	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

pid	Process
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe
2200	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2640	2108	retun.exe	31
PID 2108 wrote to memory of 2640	2108	retun.exe	31
PID 2108 wrote to memory of 2640	2108	retun.exe	31
PID 2108 wrote to memory of 2640	2108	retun.exe	31
PID 2200 wrote to memory of 2668	2200	chrome.exe	33
PID 2200 wrote to memory of 2668	2200	chrome.exe	33
PID 2200 wrote to memory of 2668	2200	chrome.exe	33
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 564	2200	chrome.exe	35
PID 2200 wrote to memory of 1792	2200	chrome.exe	36
PID 2200 wrote to memory of 1792	2200	chrome.exe	36
PID 2200 wrote to memory of 1792	2200	chrome.exe	36
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37
PID 2200 wrote to memory of 1056	2200	chrome.exe	37

C:\Users\Admin\AppData\Local\Temp\retun.exe
"C:\Users\Admin\AppData\Local\Temp\retun.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\retun.exe
  "C:\Users\Admin\AppData\Local\Temp\retun.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2640

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef68a9758,0x7fef68a9768,0x7fef68a9778
  2⤵
  PID:2668
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1152 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:2
  2⤵
  PID:564
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1528 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:8
  2⤵
  PID:1792
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1592 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:8
  2⤵
  PID:1056
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2128 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:1
  2⤵
  PID:2832
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2136 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:1
  2⤵
  PID:1584
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=2860 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:2
  2⤵
  PID:1344
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1424 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:1
  2⤵
  PID:2184
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3688 --field-trial-handle=1316,i,1770078608616382550,14171669967067278533,131072 /prefetch:8
  2⤵
  PID:480

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:2648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

Filesize
264KB

MD5
f50f89a0a91564d0b8a211f8921aa7de

SHA1
112403a17dd69d5b9018b8cede023cb3b54eab7d

SHA256
b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

SHA512
bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

Filesize
16B

MD5
18e723571b00fb1694a3bad6c78e4054

SHA1
afcc0ef32d46fe59e0483f9a3c891d3034d12f32

SHA256
8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

SHA512
43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI21082\python311.dll

Filesize
1.4MB

MD5
bc5d15277419e8f86bb0074037bd359f

SHA1
1504051c83b0fee4c8988210b4d4dc32b84ada27

SHA256
726575b0c9e1882e56d2b16580999246a735941353a528ac35afdc549059396b

SHA512
a9ba3a4bc1dc20f38dfa38e72701bf6e66a6bd0caced43094301a05dfc3bb93a7ae6a989da54b98d5de7b11e317447ea6232a4af19531de6906f9c2cf45370c0

Download Submit
memory/2640-24-0x0000000074C50000-0x000000007515B000-memory.dmp

Filesize
5.0MB

Download