nymaim | 2463740a5c8dd040a02f30fe06bf3a9f31714b67e6d6592ff515ed0dfa13c196

Analysis

max time kernel
189s
max time network
224s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 09:01

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General

Target
file.exe
Size 3.8MB
Sample221206-kywtasfd71
SHA256 2463740a5c8dd040a02f30fe06bf3a9f31714b67e6d6592ff515ed0dfa13c196
MD5 3910301fb489ed310314d7c12b5460d6
SHA1 8a6c011b4e7495bcad5ddd21d318185cfad8ea8d
SHA512 69ddf21bcc5d8f880719023696fad7e1a4970b832c6cea47663e51b4c9411ccfbe35a485e6b5a83f57f0e396e0ca185745ce02afe7cde552ef63af5a86d60285
SSDEEP 98304:KsFs/kkf2uygocW9IkL/Ic63wLvZXK9j3vpkn6aQ7aOU:Ekdb5LY3OJU3vPa2ax
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
1936	is-96LSK.tmp
2016	PrintFolders.exe
436	Y7vJpkwVwAdn8F.exe

Loads dropped DLL 10 IoCs

pid	Process
1988	file.exe
1936	is-96LSK.tmp
1936	is-96LSK.tmp
1936	is-96LSK.tmp
1936	is-96LSK.tmp
2016	PrintFolders.exe
2016	PrintFolders.exe
2016	PrintFolders.exe
436	Y7vJpkwVwAdn8F.exe
436	Y7vJpkwVwAdn8F.exe

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-5JO0J.tmp	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-44V14.tmp	is-96LSK.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-96LSK.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ERQN4.tmp	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LNEHB.tmp	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-DI5PJ.tmp	is-96LSK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-PEIN5.tmp	is-96LSK.tmp

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2016	PrintFolders.exe
2016	PrintFolders.exe
2016	PrintFolders.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1988 wrote to memory of 1936	1988	file.exe	27
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 1936 wrote to memory of 2016	1936	is-96LSK.tmp	28
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29
PID 2016 wrote to memory of 436	2016	PrintFolders.exe	29

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\is-3IN64.tmp\is-96LSK.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3IN64.tmp\is-96LSK.tmp" /SL4 $60122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3681525 96256
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:436

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

Replay Monitor

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Downloads

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.2MB
SHA256 a0015c7ead12cc4b35144dc8e5e4ad3ef7396606b03364e8bd5754f5a6e6232a
MD5 b95fe8ad623fdd90cfbb3f57bb41150c
SHA1 1e6608cc191716bd1ef049e9c4477bd2ea5076bf
SHA512 8d1a08e6c696c3cc7fcaa0c119b33b2be527410cad277102718de4d431d2ac6dfd071c0542b0f62922f9c49c5eb3b5cae3190d4309ab19ac6ee6bcc2efe99c1d
SSDEEP 98304:DR/jd75PniyBESBbapl0GCSQFXs85FiYW18yozYqxNXCqf:DRB75FE++AGdgXXf
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.2MB
SHA256 a0015c7ead12cc4b35144dc8e5e4ad3ef7396606b03364e8bd5754f5a6e6232a
MD5 b95fe8ad623fdd90cfbb3f57bb41150c
SHA1 1e6608cc191716bd1ef049e9c4477bd2ea5076bf
SHA512 8d1a08e6c696c3cc7fcaa0c119b33b2be527410cad277102718de4d431d2ac6dfd071c0542b0f62922f9c49c5eb3b5cae3190d4309ab19ac6ee6bcc2efe99c1d
SSDEEP 98304:DR/jd75PniyBESBbapl0GCSQFXs85FiYW18yozYqxNXCqf:DRB75FE++AGdgXXf
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-96LSK.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3IN64.tmp\is-96LSK.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-96LSK.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3IN64.tmp\is-96LSK.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

Y7vJpkwVwAdn8F.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

Y7vJpkwVwAdn8F.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.2MB
SHA256 a0015c7ead12cc4b35144dc8e5e4ad3ef7396606b03364e8bd5754f5a6e6232a
MD5 b95fe8ad623fdd90cfbb3f57bb41150c
SHA1 1e6608cc191716bd1ef049e9c4477bd2ea5076bf
SHA512 8d1a08e6c696c3cc7fcaa0c119b33b2be527410cad277102718de4d431d2ac6dfd071c0542b0f62922f9c49c5eb3b5cae3190d4309ab19ac6ee6bcc2efe99c1d
SSDEEP 98304:DR/jd75PniyBESBbapl0GCSQFXs85FiYW18yozYqxNXCqf:DRB75FE++AGdgXXf
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.2MB
SHA256 a0015c7ead12cc4b35144dc8e5e4ad3ef7396606b03364e8bd5754f5a6e6232a
MD5 b95fe8ad623fdd90cfbb3f57bb41150c
SHA1 1e6608cc191716bd1ef049e9c4477bd2ea5076bf
SHA512 8d1a08e6c696c3cc7fcaa0c119b33b2be527410cad277102718de4d431d2ac6dfd071c0542b0f62922f9c49c5eb3b5cae3190d4309ab19ac6ee6bcc2efe99c1d
SSDEEP 98304:DR/jd75PniyBESBbapl0GCSQFXs85FiYW18yozYqxNXCqf:DRB75FE++AGdgXXf
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.2MB
SHA256 a0015c7ead12cc4b35144dc8e5e4ad3ef7396606b03364e8bd5754f5a6e6232a
MD5 b95fe8ad623fdd90cfbb3f57bb41150c
SHA1 1e6608cc191716bd1ef049e9c4477bd2ea5076bf
SHA512 8d1a08e6c696c3cc7fcaa0c119b33b2be527410cad277102718de4d431d2ac6dfd071c0542b0f62922f9c49c5eb3b5cae3190d4309ab19ac6ee6bcc2efe99c1d
SSDEEP 98304:DR/jd75PniyBESBbapl0GCSQFXs85FiYW18yozYqxNXCqf:DRB75FE++AGdgXXf
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-107DN.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-107DN.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-107DN.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-96LSK.tmp

Path \Users\Admin\AppData\Local\Temp\is-3IN64.tmp\is-96LSK.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

Y7vJpkwVwAdn8F.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

Y7vJpkwVwAdn8F.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

Y7vJpkwVwAdn8F.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y7vJpkwVwAdn8F.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/1936-69-0x0000000002F40000-0x0000000004380000-memory.dmp

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memory/1936-78-0x0000000002F40000-0x0000000004380000-memory.dmp

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memory/1988-54-0x0000000075571000-0x0000000075573000-memory.dmp

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memory/1988-55-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1988-65-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2016-77-0x0000000000400000-0x0000000001840000-memory.dmp

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memory/2016-81-0x0000000001D50000-0x0000000003190000-memory.dmp

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memory/2016-82-0x0000000000400000-0x0000000001840000-memory.dmp

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memory/2016-80-0x0000000000400000-0x0000000001840000-memory.dmp

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memory/2016-79-0x0000000000400000-0x0000000001840000-memory.dmp

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memory/2016-76-0x0000000001D50000-0x0000000003190000-memory.dmp

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memory/2016-75-0x0000000001D50000-0x0000000003190000-memory.dmp

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memory/2016-70-0x0000000000400000-0x0000000001840000-memory.dmp

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memory/2016-90-0x0000000010000000-0x000000001001B000-memory.dmp

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