guloader | 05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3

Analysis

max time kernel
146s
max time network
142s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23/05/2024, 01:02

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General

Target
05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
Size 370KB
Sample240523-bebjksfg2v
SHA256 05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3
MD5 18776562551c3adcdc9f49c013772fbd
SHA1 ee124b7cd0296b4e524454ab12059b8be60bc002
SHA512 c16b5c1c7822af0bee4d5f9707e00a4513e00b0925844fa3c8ba8afbaf7172d2b185dfaf8b1bc1fdce00c6a44d62d34d5bf611c0a2219de0a030ea2f64767364
SSDEEP 6144:MDGIRuoQiOd9kyzCiY1vJ/BnA+XCzW8w3hRTMiZ4rbcevq:zItQiOdCyzItA+XLRQiZWC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 4 IoCs

pid	Process
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
2676	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28
PID 2204 wrote to memory of 2676	2204	05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe	28

C:\Users\Admin\AppData\Local\Temp\05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
"C:\Users\Admin\AppData\Local\Temp\05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe
  "C:\Users\Admin\AppData\Local\Temp\05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

BgImage.dll

Path \Users\Admin\AppData\Local\Temp\nsy32B5.tmp\BgImage.dll
Size 7KB
SHA256 8920afae5d9c06f6ba1f254a1e32ac2acfb0fdb11ab2158cfe880a191045e3d7
MD5 143c1b18ccd1ab2ceed02caf0e06ef8a
SHA1 b59d780e0a85f816b41aa657d4a643d77bd20a99
SHA512 91bd09610679224a7774044b16054721567385d3faa241e72b51f27ef660870f7282e887016df492d5b3ab3b6d9c130e036258c4f27d5ca4cc3a12b76ff71b39
SSDEEP 96:8eS0AKTIfv7QCUsthvNL85s4lk38Eb3CDfvEh8uLzqk5nLiEQjJ3KxkP:t8BfjbUA/85q3wEh8uLmcLpmP
MD5 SHA1 SHA512 SSDEEP

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System.dll

Path \Users\Admin\AppData\Local\Temp\nsy32B5.tmp\System.dll
Size 11KB
SHA256 a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77
MD5 b0c77267f13b2f87c084fd86ef51ccfc
SHA1 f7543f9e9b4f04386dfbf33c38cbed1bf205afb3
SHA512 f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e
SSDEEP 192:4PtkiQJr7jHYT87RfwXQ6YSYtOuVDi7IsFW14Ll8CO:H78TQIgGCDp14LGC
MD5 SHA1 SHA512 SSDEEP

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nsDialogs.dll

Path \Users\Admin\AppData\Local\Temp\nsy32B5.tmp\nsDialogs.dll
Size 9KB
SHA256 062c75ad650548750564ffd7aef8cd553773b5c26cae7f25a5749b13165194e3
MD5 eac1c3707970fe7c71b2d760c34763fa
SHA1 f275e659ad7798994361f6ccb1481050aba30ff8
SHA512 3415bd555cf47407c0ae62be0dbcba7173d2b33a371bf083ce908fc901811adb888b7787d11eb9d99a1a739cbd9d1c66e565db6cd678bdadaf753fbda14ffd09
SSDEEP 96:oXHqZ4zC5RH3cXX1LlYlRowycxM2DjDf3GEst+Nt+jvDYx4AqndYHnxss:oXHq+CP3uKrpyREs06YxcdGn
MD5 SHA1 SHA512 SSDEEP

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memory/2204-34-0x00000000040F0000-0x00000000057C0000-memory.dmp

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memory/2204-35-0x0000000077911000-0x0000000077A12000-memory.dmp

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memory/2204-36-0x0000000077910000-0x0000000077AB9000-memory.dmp

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memory/2204-39-0x00000000040F0000-0x00000000057C0000-memory.dmp

Download

memory/2204-45-0x00000000040F0000-0x00000000057C0000-memory.dmp

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memory/2676-37-0x0000000077910000-0x0000000077AB9000-memory.dmp

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memory/2676-38-0x0000000000470000-0x00000000014D2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads