nymaim | e038c2b16ade3d54068bab3bd49e9251f853bfc0853e6c95979d0add3f63c7f4

Analysis

max time kernel
73s
max time network
74s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
09/12/2022, 23:46

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General

Target
file.exe
Size 2.2MB
Sample221209-3samzshe2v
SHA256 e038c2b16ade3d54068bab3bd49e9251f853bfc0853e6c95979d0add3f63c7f4
MD5 f04ab569117c35053bf0538993c5cfa2
SHA1 0dcf2478f9e758c7895fb9afc817f5564c49d394
SHA512 cba597ebae9755513cfec77bd5754b651a7c6f6ca9b10094dd8c9bf2866ad6a6c511adba27af42d2f3d2bef290f1ddd32a1b3bf991da2d49de0ca764f5975597
SSDEEP 49152:usKei70lJEhdAUKzjt+Q8JrlU9gge+JcaTRdKKJA4XYsWASsVrMqrLZV:u1d70TSAUKntH8JscaTDKP5nqPr
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
1932	is-3AMB3.tmp
1972	ntFolders.exe
924	lJTIMgQHmP.exe

Loads dropped DLL 10 IoCs

pid	Process
1044	file.exe
1932	is-3AMB3.tmp
1932	is-3AMB3.tmp
1932	is-3AMB3.tmp
1932	is-3AMB3.tmp
1972	ntFolders.exe
1972	ntFolders.exe
1972	ntFolders.exe
924	lJTIMgQHmP.exe
924	lJTIMgQHmP.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\unins000.dat	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0MGKU.tmp	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-EAV5E.tmp	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7670P.tmp	is-3AMB3.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HG1PE.tmp	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-BTLTL.tmp	is-3AMB3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-T0VPK.tmp	is-3AMB3.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\ntFolders.exe	is-3AMB3.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
1884	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1972	ntFolders.exe
1972	ntFolders.exe
1972	ntFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1932	is-3AMB3.tmp
Token: SeBackupPrivilege	1932	is-3AMB3.tmp
Token: SeDebugPrivilege	1884	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1044 wrote to memory of 1932	1044	file.exe	27
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1932 wrote to memory of 1972	1932	is-3AMB3.tmp	28
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 924	1972	ntFolders.exe	29
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1972 wrote to memory of 1168	1972	ntFolders.exe	32
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34
PID 1168 wrote to memory of 1884	1168	cmd.exe	34

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:1044
- C:\Users\Admin\AppData\Local\Temp\is-4BT9C.tmp\is-3AMB3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4BT9C.tmp\is-3AMB3.tmp" /SL4 $6012A "C:\Users\Admin\AppData\Local\Temp\file.exe" 2021018 96256
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Program Files (x86)\PrintFolders\ntFolders.exe
    "C:\Program Files (x86)\PrintFolders\ntFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1972
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:924
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ntFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\ntFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1168
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ntFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1884

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

ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 145864fcb2e3df89a5b7ee1a980f683fe9ac0412af3f8689384e68d6e6c0eb5e
MD5 257d54ce4e91fc654860f943f9be4cda
SHA1 d6ca2987500e332cf16c4f475894234d8a6b118b
SHA512 af548c30dc9f0ba082ba9b0e4280519b52b4c3698e7298cd6b781d7c4f20c9c4328e34d24c1c3e1e050e41beeb40ffc1cb742840884a311de1dac088d96f6c91
SSDEEP 98304:dqrw3YbByGj7z+H8/2F0xiMlypNIJjHsHaUS:c24
MD5 SHA1 SHA512 SSDEEP

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ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 145864fcb2e3df89a5b7ee1a980f683fe9ac0412af3f8689384e68d6e6c0eb5e
MD5 257d54ce4e91fc654860f943f9be4cda
SHA1 d6ca2987500e332cf16c4f475894234d8a6b118b
SHA512 af548c30dc9f0ba082ba9b0e4280519b52b4c3698e7298cd6b781d7c4f20c9c4328e34d24c1c3e1e050e41beeb40ffc1cb742840884a311de1dac088d96f6c91
SSDEEP 98304:dqrw3YbByGj7z+H8/2F0xiMlypNIJjHsHaUS:c24
MD5 SHA1 SHA512 SSDEEP

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is-3AMB3.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-4BT9C.tmp\is-3AMB3.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

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is-3AMB3.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-4BT9C.tmp\is-3AMB3.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

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lJTIMgQHmP.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.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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lJTIMgQHmP.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.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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ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 145864fcb2e3df89a5b7ee1a980f683fe9ac0412af3f8689384e68d6e6c0eb5e
MD5 257d54ce4e91fc654860f943f9be4cda
SHA1 d6ca2987500e332cf16c4f475894234d8a6b118b
SHA512 af548c30dc9f0ba082ba9b0e4280519b52b4c3698e7298cd6b781d7c4f20c9c4328e34d24c1c3e1e050e41beeb40ffc1cb742840884a311de1dac088d96f6c91
SSDEEP 98304:dqrw3YbByGj7z+H8/2F0xiMlypNIJjHsHaUS:c24
MD5 SHA1 SHA512 SSDEEP

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ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 145864fcb2e3df89a5b7ee1a980f683fe9ac0412af3f8689384e68d6e6c0eb5e
MD5 257d54ce4e91fc654860f943f9be4cda
SHA1 d6ca2987500e332cf16c4f475894234d8a6b118b
SHA512 af548c30dc9f0ba082ba9b0e4280519b52b4c3698e7298cd6b781d7c4f20c9c4328e34d24c1c3e1e050e41beeb40ffc1cb742840884a311de1dac088d96f6c91
SSDEEP 98304:dqrw3YbByGj7z+H8/2F0xiMlypNIJjHsHaUS:c24
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 145864fcb2e3df89a5b7ee1a980f683fe9ac0412af3f8689384e68d6e6c0eb5e
MD5 257d54ce4e91fc654860f943f9be4cda
SHA1 d6ca2987500e332cf16c4f475894234d8a6b118b
SHA512 af548c30dc9f0ba082ba9b0e4280519b52b4c3698e7298cd6b781d7c4f20c9c4328e34d24c1c3e1e050e41beeb40ffc1cb742840884a311de1dac088d96f6c91
SSDEEP 98304:dqrw3YbByGj7z+H8/2F0xiMlypNIJjHsHaUS:c24
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-3AMB3.tmp

Path \Users\Admin\AppData\Local\Temp\is-4BT9C.tmp\is-3AMB3.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-INDL6.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-INDL6.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-INDL6.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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lJTIMgQHmP.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.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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lJTIMgQHmP.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.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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lJTIMgQHmP.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lJTIMgQHmP.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/1044-55-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1044-94-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1044-62-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1044-54-0x00000000756A1000-0x00000000756A3000-memory.dmp

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memory/1932-73-0x0000000003170000-0x00000000042AF000-memory.dmp

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memory/1972-84-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1972-85-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1972-89-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1972-76-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1972-75-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1972-93-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1972-74-0x0000000000400000-0x000000000153F000-memory.dmp

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