Analysis
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max time kernel
145s -
max time network
134s -
platform
windows7_x64 -
resource
win7-20230712-en -
resource tags
arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system -
submitted
05/08/2023, 12:53
Static task
static1
Behavioral task
behavioral1
Sample
6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe
Resource
win10v2004-20230703-en
General
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Target
6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe
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Size
807KB
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MD5
165aeead5b51d96bc4d9942f03b93fee
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SHA1
566023603abdbc5e1ef024103b85c565e538b55a
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SHA256
6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506
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SHA512
bde6a00a02c39d10a5b55351a85d5125b7a5475922c136d6ef2e8aa9b41bd326ca73edc788eb792d26d43e01a42d435c949f8ef84b21d0f4052baa5023cbf45f
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SSDEEP
12288:obB5Oh7BMTQ+s9x4xizOn2YKX79rni2bTx9H8hSbuaOkcoNutQynIEqFY2VdxY5B:obW7b+s9xEnkxnvTx1b/Okw2sOYn5B
Malware Config
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
description ioc Process File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Loads dropped DLL 1 IoCs
pid Process 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Fimbrethil155\crabbing.ant 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 3008 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 3008 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1196 set thread context of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30 -
Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Chad\ndplaner\komtessernes.ini 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\resources\honnrmarch.han 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 3008 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 1196 wrote to memory of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30 PID 1196 wrote to memory of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30 PID 1196 wrote to memory of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30 PID 1196 wrote to memory of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30 PID 1196 wrote to memory of 3008 1196 6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Users\Admin\AppData\Local\Temp\6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\6f61121924dbe1b34c6af8af8ee78528ca9d839856c9fd8ffe8a3a2e48cae506exe_JC.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3008
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
11KB
MD575ed96254fbf894e42058062b4b4f0d1
SHA1996503f1383b49021eb3427bc28d13b5bbd11977
SHA256a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
SHA51258174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4