nymaim | 14a5d45ecd255ca834d551eda88f0c3b488951c429b71ab5b6769dcaa6362e83

Analysis

max time kernel
131s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
22/11/2022, 22:32

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General

Target
file.exe
Size 1.3MB
Sample221122-2fycvabc77
SHA256 14a5d45ecd255ca834d551eda88f0c3b488951c429b71ab5b6769dcaa6362e83
MD5 f41b76f49a02ddd8d48cd34394b5a03d
SHA1 42dca0437f1f4e49a0b835a7ef4ab43816e0a02c
SHA512 2156fac9c41183a75fd5f18c63eeba026e0547097f4545dafd4f3121241d1b11129282afb6fc494e7c60a599d1bf6f2b040013be653b00d57745b3cbf4f0cd84
SSDEEP 24576:pizn+jZRYKTFzbcBt0N5D/uvR0yzG30wWavABIwTVw6YJIgZIY7eCLxYiD:in+jZRYapT5D/ERHzGtHvq3YZNeViD
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
428	is-MQRDM.tmp
956	PrintFolders.exe
3008	wHt6R3.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	PrintFolders.exe

Loads dropped DLL 1 IoCs

pid	Process
428	is-MQRDM.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-CIRC7.tmp	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-RMJHK.tmp	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-EEQHA.tmp	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-30CT1.tmp	is-MQRDM.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7SQ44.tmp	is-MQRDM.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-MQRDM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7KEKG.tmp	is-MQRDM.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4872	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
956	PrintFolders.exe
956	PrintFolders.exe
956	PrintFolders.exe
956	PrintFolders.exe
956	PrintFolders.exe
956	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4872	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 428	2096	file.exe	84
PID 2096 wrote to memory of 428	2096	file.exe	84
PID 2096 wrote to memory of 428	2096	file.exe	84
PID 428 wrote to memory of 956	428	is-MQRDM.tmp	85
PID 428 wrote to memory of 956	428	is-MQRDM.tmp	85
PID 428 wrote to memory of 956	428	is-MQRDM.tmp	85
PID 956 wrote to memory of 3008	956	PrintFolders.exe	86
PID 956 wrote to memory of 3008	956	PrintFolders.exe	86
PID 956 wrote to memory of 3008	956	PrintFolders.exe	86
PID 956 wrote to memory of 3412	956	PrintFolders.exe	96
PID 956 wrote to memory of 3412	956	PrintFolders.exe	96
PID 956 wrote to memory of 3412	956	PrintFolders.exe	96
PID 3412 wrote to memory of 4872	3412	cmd.exe	98
PID 3412 wrote to memory of 4872	3412	cmd.exe	98
PID 3412 wrote to memory of 4872	3412	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\is-UCQGQ.tmp\is-MQRDM.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-UCQGQ.tmp\is-MQRDM.tmp" /SL4 $A0056 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1076777 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:428
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:956
  - - C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\wHt6R3.exe
      4⤵
      Executes dropped EXE
      PID:3008
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3412
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.4MB
SHA256 8bddaf8b0d77d14e642660102a9b4716de8ae87453d05c5e2113eb07aa7b0f90
MD5 b30d563223af7d02c4fea3e88fa11f9d
SHA1 d944f4dcb3bbab2ee41f02bb071790a165cd07e3
SHA512 d309933157868d70d2a5b89b848db4eeb9bf346065f6717bbb97f970875c7a93ebfb56451ba7ba000c4bd9ecc6dbc9103cf11222a1d38efcb41b826019696c11
SSDEEP 24576:0+EC+Dy+Af+LEMnIt5+++L8+TN+N5QgnBm7r4lMztywwm+5lNLc1fEryttwVlcIV:NELvAGL19nLlw/B8vFyxV5rrSWRX
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.4MB
SHA256 8bddaf8b0d77d14e642660102a9b4716de8ae87453d05c5e2113eb07aa7b0f90
MD5 b30d563223af7d02c4fea3e88fa11f9d
SHA1 d944f4dcb3bbab2ee41f02bb071790a165cd07e3
SHA512 d309933157868d70d2a5b89b848db4eeb9bf346065f6717bbb97f970875c7a93ebfb56451ba7ba000c4bd9ecc6dbc9103cf11222a1d38efcb41b826019696c11
SSDEEP 24576:0+EC+Dy+Af+LEMnIt5+++L8+TN+N5QgnBm7r4lMztywwm+5lNLc1fEryttwVlcIV:NELvAGL19nLlw/B8vFyxV5rrSWRX
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-C5C4D.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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is-MQRDM.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-UCQGQ.tmp\is-MQRDM.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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is-MQRDM.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-UCQGQ.tmp\is-MQRDM.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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wHt6R3.exe

Path C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\wHt6R3.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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wHt6R3.exe

Path C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\wHt6R3.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/956-143-0x0000000000400000-0x0000000001373000-memory.dmp

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memory/956-142-0x0000000000400000-0x0000000001373000-memory.dmp

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memory/956-147-0x0000000000400000-0x0000000001373000-memory.dmp

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memory/956-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/956-153-0x0000000000400000-0x0000000001373000-memory.dmp

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memory/2096-132-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/2096-137-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/2096-154-0x0000000000400000-0x0000000000413000-memory.dmp

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