guloader | 7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa

General

Target
7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
Size 297KB
Sample260608-ls36vsby3k
SHA256 7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa
MD5 f8b1a6f2a7bab6ffdef1e78a48e7a7fa
SHA1 baa1a354622fde5fa03e28bc3eb4f15433a96e5d
SHA512 d6b5ebb90f8ca94506af568b9d33c16abcae43840e7e5bce3e40078af9a5aad7a49470ac1a502e3376536e7bd74a0efaacf1555ef00b5ac2a07ed1210e830505
SSDEEP 6144:+8dWR9kvIuX9RdmKeG7oguuK9kMu9nliHxcUG3ARyQfVKrFj1L1Or2YzKN3:nMRavIsoKpoFJu9g43ARy0VKrROrvo3
TLSH
T13E54131271A1CCF7C3A82372893A6B6C4EFACD492180730BBBD47F0AAD737515926657
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
1796	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\sangteksten\rippe.gif	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe

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

System Information Discovery
T1082

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	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 2240	552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe	80
PID 552 wrote to memory of 1796	552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe	81
PID 552 wrote to memory of 1796	552	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe	81
PID 1796 wrote to memory of 3012	1796	7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe	82

C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
"C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:552
- C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
  "C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe"
  2⤵
  PID:2240
- C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
  "C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe
    "C:\Users\Admin\AppData\Local\Temp\7101c5945c026bef41d2cbf5bb5865976af92b56d326336b89523c385680f2aa.exe"
    3⤵
    PID:3012

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsw220B.tmp\System.dll
Size 11KB
SHA256 904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8
MD5 55a26d7800446f1373056064c64c3ce8
SHA1 80256857e9a0a9c8897923b717f3435295a76002
SHA512 04b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b
SSDEEP 192:MPtkumJX7zBE2kGwfy9S9VkPsFQ1Mx1c:97O2k5q9wA1Mxa
TLSH
T1F2324C15031086F3E1D2853D682B39AB2FB969118AF04E438FB35952EE347C7AD79352
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/552-17-0x0000000004910000-0x0000000005D77000-memory.dmp

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memory/552-18-0x0000000010004000-0x0000000010005000-memory.dmp

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memory/552-19-0x0000000004910000-0x0000000005D77000-memory.dmp

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memory/1796-20-0x0000000077E48000-0x0000000077E49000-memory.dmp

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memory/1796-22-0x0000000077E5B000-0x0000000077E5C000-memory.dmp

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memory/1796-21-0x0000000077EDB000-0x0000000077EDC000-memory.dmp

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memory/1796-23-0x0000000001AE0000-0x0000000002F47000-memory.dmp

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memory/1796-24-0x00000000007C0000-0x0000000001AD7000-memory.dmp

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memory/1796-25-0x0000000077EDB000-0x0000000077EDC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads