guloader | fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 01:57

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General

Target
fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe
Size 521KB
Sample240516-cdkarsfd31
SHA256 fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9
MD5 4783976d3cdde1581e024848e824d9c5
SHA1 f0abd60917ca5f4346510183ac78395c707e078e
SHA512 cde37eee6c9182eb1598544813b55ff10bc5010297209a57277ebc03c4d2fd478fecb1411e1c0579678e96b3881a6134392efa221e93a8cc1e35d4a6a7b54069
SSDEEP 6144:u5lz/+lxDWF1MC/Zu+ExE8BksJCuJsy2sARJ38Y15qwNqocgONIbEnYlnThLqIJE:2xZExB/Msa3J1vq2OeEnYld2IfoqKQjq
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 2 IoCs

pid	Process
728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe
728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe
3104	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 728 set thread context of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97

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
728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97
PID 728 wrote to memory of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97
PID 728 wrote to memory of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97
PID 728 wrote to memory of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97
PID 728 wrote to memory of 3104	728	fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe	97

C:\Users\Admin\AppData\Local\Temp\fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe
"C:\Users\Admin\AppData\Local\Temp\fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:728
- C:\Users\Admin\AppData\Local\Temp\fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe
  "C:\Users\Admin\AppData\Local\Temp\fc94417411054caac75cf2bf020653c0312c669d43ebcc5c2c5a6348b8c03fc9.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:3104

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

nsdA72E.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsdA72E.tmp
Size 5B
SHA256 ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0
MD5 e2fecc970546c3418917879fe354826c
SHA1 63f1c1dd01b87704a6b6c99fd9f141e0a3064f16
SHA512 3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a
MD5 SHA1 SHA512

Submit Download

nsdA77F.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsdA77F.tmp
Size 7B
SHA256 639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713
MD5 67cfa7364c4cf265b047d87ff2e673ae
SHA1 56e27889277981a9b63fcf5b218744a125bbc2fa
SHA512 17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b
MD5 SHA1 SHA512

Submit Download

nsdA77F.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsdA77F.tmp
Size 9B
SHA256 ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858
MD5 2b3884fe02299c565e1c37ee7ef99293
SHA1 d8e2ef2a52083f6df210109fea53860ea227af9c
SHA512 aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe
MD5 SHA1 SHA512

Submit Download

nsdA77F.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsdA77F.tmp
Size 10B
SHA256 a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92
MD5 9a53fc1d7126c5e7c81bb5c15b15537b
SHA1 e2d13e0fa37de4c98f30c728210d6afafbb2b000
SHA512 b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1
MD5 SHA1 SHA512

Submit Download

nsnA76E.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA76E.tmp
Size 6B
SHA256 6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c
MD5 50484c19f1afdaf3841a0d821ed393d2
SHA1 c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b
SHA512 d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b
MD5 SHA1 SHA512

Submit Download

nsnA76E.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA76E.tmp
Size 8B
SHA256 1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101
MD5 c3cb69218b85c3260387fb582cb518dd
SHA1 961c892ded09a4cbb5392097bb845ccba65902ad
SHA512 2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422
MD5 SHA1 SHA512

Submit Download

nsnA76E.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA76E.tmp
Size 48B
SHA256 454a97bbcd88c00fd8617e38fec2ebc855a608adbb751ad5ce4355f6bd171c32
MD5 040cc34b899dd5230d5113b5156ec5d4
SHA1 60a49c8b3e3f33b38c1780e8826e50d9672c5bcf
SHA512 e6d441445f20c73e6e23203323dd5ff68ac2a74767fa69aac7c2c1b05e7bd981cf461b66c9d516dc53b4bbc32117c12e103187cfca891846b9d42ee2aa2c423d
MD5 SHA1 SHA512

Submit Download

nsnA7BE.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA7BE.tmp
Size 1B
SHA256 8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a
MD5 8ce4b16b22b58894aa86c421e8759df3
SHA1 13fbd79c3d390e5d6585a21e11ff5ec1970cff0c
SHA512 2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25
MD5 SHA1 SHA512

Submit Download

nsnA7BE.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA7BE.tmp
Size 4B
SHA256 65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d
MD5 cde63b34c142af0a38cbe83791c964f8
SHA1 ece2b194b486118b40ad12c1f0e9425dd0672424
SHA512 0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c
MD5 SHA1 SHA512

Submit Download

nsnA7BE.tmp

Path C:\Users\Admin\AppData\Local\Temp\nsnA7BE.tmp
Size 16B
SHA256 0c09cbcf0803dc2c44739757d37fe7f33fa193d747df71db3172e68aa0ddb309
MD5 1a069d3d8cca839a3c2f44a0e833d67c
SHA1 2bdc93e3d3aac0914cd4d3d43210bc2b2c7f09cf
SHA512 970ed67a84e4132b0336cd8f7c07c4ab6dc56ce97993b64e4e94a80e76ee7bd4ca04349cd0113df5e04053fbfde9d27c3cb5ab61a9492d584b7febfcaddf53e2
MD5 SHA1 SHA512

Submit Download

nstA82D.tmp

Path C:\Users\Admin\AppData\Local\Temp\nstA82D.tmp
Size 18B
SHA256 3bf02a529249eeb91896b44d39cc6dc379c806af777afb186330c0238084d3aa
MD5 eeb84903df39a84640af1a50b4a37d69
SHA1 b6b4b8343c46fcfc7f433274bf5ee793fff7c1bc
SHA512 fc05574180d4458a408021ef7c4e354995349817d2f143b5f9a2e3c259a9c08a1cdaaed22a419040fa2c37e25616f01bb6cfd5aea6b23cf75bc2fa3037bdfa47
MD5 SHA1 SHA512

Submit Download

nstA82D.tmp

Path C:\Users\Admin\AppData\Local\Temp\nstA82D.tmp
Size 21B
SHA256 180f6fc17f1d6e7d0878868f1643dc8c340f457eac0d6fc3680a95f1f9e7e54e
MD5 2dc5ae451f6175ae513bed5c4714d5ee
SHA1 4f47723723e7643a5b4c67f5f9d68cd834f80a4f
SHA512 9140fa690eca23bdf03d3058e6527c56cd51089b394ef681979f8e63cdc183fa942aecfd2d1061f50966fb998a5c0999b97b5b3a9af6aff1ce1d4826cfd42887
MD5 SHA1 SHA512

Submit Download

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsyA75E.tmp\System.dll
Size 12KB
SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 48df0911f0484cbe2a8cdd5362140b63c41ee457
SHA512 c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
SSDEEP 192:1enY0LWelt70elWjvfstJcVtwtYbjnIOg5AaDnbC7ypXhtIj:18PJlt70esj0Mt9vn6ay6
MD5 SHA1 SHA512 SSDEEP

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memory/728-565-0x0000000005820000-0x0000000006DF6000-memory.dmp

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memory/728-566-0x0000000077701000-0x0000000077821000-memory.dmp

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memory/728-567-0x0000000074565000-0x0000000074566000-memory.dmp

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memory/728-570-0x0000000005820000-0x0000000006DF6000-memory.dmp

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memory/728-580-0x0000000005820000-0x0000000006DF6000-memory.dmp

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memory/3104-568-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/3104-569-0x0000000001660000-0x0000000002C36000-memory.dmp

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memory/3104-572-0x0000000077788000-0x0000000077789000-memory.dmp

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memory/3104-571-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/3104-574-0x0000000001660000-0x0000000002C36000-memory.dmp

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memory/3104-576-0x0000000077701000-0x0000000077821000-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