nymaim | 99eed97fa236da51cf743e89a7bccf89f16e2da53934b8f5c9897dec6bcfdf91

Analysis

max time kernel
74s
max time network
77s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 12:02

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General

Target
file.exe
Size 3.6MB
Sample221206-n7fp8aae2x
SHA256 99eed97fa236da51cf743e89a7bccf89f16e2da53934b8f5c9897dec6bcfdf91
MD5 e11f280639a421365aa0b8eaecd60568
SHA1 987e6fdac3055c4499a44cabe88c143dece6662f
SHA512 0e2e8c1996390c800e0a57ea6ae094b09f8e4e6ce8f8af0640195e08609302bffc4dee4fec67824283dfc097259e1d5ec29f0ca3b7f099f5cb205b8b30c830f3
SSDEEP 98304:6Sp/Gy8xhAVepXdnY/b7Jjed8x7R49+XLp+zsD61fz8r:x+5xhCepVY/tueyILEzsm1fzY
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
1952	is-ESHD0.tmp
1568	PrintFolders.exe
1412	jwmP1oa6.exe

Loads dropped DLL 10 IoCs

pid	Process
1800	file.exe
1952	is-ESHD0.tmp
1952	is-ESHD0.tmp
1952	is-ESHD0.tmp
1952	is-ESHD0.tmp
1568	PrintFolders.exe
1568	PrintFolders.exe
1568	PrintFolders.exe
1412	jwmP1oa6.exe
1412	jwmP1oa6.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-0ORQ5.tmp	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-I5T88.tmp	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-J31CT.tmp	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-86ERH.tmp	is-ESHD0.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-8FLOQ.tmp	is-ESHD0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-NIIGE.tmp	is-ESHD0.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-ESHD0.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
1284	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1568	PrintFolders.exe
1568	PrintFolders.exe
1568	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1284	taskkill.exe
Token: SeRestorePrivilege	1952	is-ESHD0.tmp
Token: SeBackupPrivilege	1952	is-ESHD0.tmp

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1800 wrote to memory of 1952	1800	file.exe	28
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1952 wrote to memory of 1568	1952	is-ESHD0.tmp	29
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 1412	1568	PrintFolders.exe	30
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 1568 wrote to memory of 580	1568	PrintFolders.exe	33
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35
PID 580 wrote to memory of 1284	580	cmd.exe	35

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:1800
- C:\Users\Admin\AppData\Local\Temp\is-0OD7C.tmp\is-ESHD0.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-0OD7C.tmp\is-ESHD0.tmp" /SL4 $60126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3505908 96256
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1952
- - 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:1568
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1412
  - - 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:580
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1284

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 6.1MB
SHA256 2bd6d64ca7deffded794e943975da85c81f178c46812bcbbae28b7059f94f13c
MD5 5fb0ca4480d77aee0577fd665a1ddb05
SHA1 6b62461470cc06854708eaf2454e8989185f0475
SHA512 7f8c149735825d13e2c0b7c88f772ced2e979ba0f6924522d9335aa3d31ed224a1eba346b9a0634f295d16d96f5d255900e87e82980f2c963cac3eedeac66db7
SSDEEP 98304:Gjd75PniyBESyoELMxOGn2xDzGONa4Dk6:U75FECH6
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.1MB
SHA256 2bd6d64ca7deffded794e943975da85c81f178c46812bcbbae28b7059f94f13c
MD5 5fb0ca4480d77aee0577fd665a1ddb05
SHA1 6b62461470cc06854708eaf2454e8989185f0475
SHA512 7f8c149735825d13e2c0b7c88f772ced2e979ba0f6924522d9335aa3d31ed224a1eba346b9a0634f295d16d96f5d255900e87e82980f2c963cac3eedeac66db7
SSDEEP 98304:Gjd75PniyBESyoELMxOGn2xDzGONa4Dk6:U75FECH6
MD5 SHA1 SHA512 SSDEEP

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is-ESHD0.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-0OD7C.tmp\is-ESHD0.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

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is-ESHD0.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-0OD7C.tmp\is-ESHD0.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

jwmP1oa6.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.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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jwmP1oa6.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.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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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.1MB
SHA256 2bd6d64ca7deffded794e943975da85c81f178c46812bcbbae28b7059f94f13c
MD5 5fb0ca4480d77aee0577fd665a1ddb05
SHA1 6b62461470cc06854708eaf2454e8989185f0475
SHA512 7f8c149735825d13e2c0b7c88f772ced2e979ba0f6924522d9335aa3d31ed224a1eba346b9a0634f295d16d96f5d255900e87e82980f2c963cac3eedeac66db7
SSDEEP 98304:Gjd75PniyBESyoELMxOGn2xDzGONa4Dk6:U75FECH6
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.1MB
SHA256 2bd6d64ca7deffded794e943975da85c81f178c46812bcbbae28b7059f94f13c
MD5 5fb0ca4480d77aee0577fd665a1ddb05
SHA1 6b62461470cc06854708eaf2454e8989185f0475
SHA512 7f8c149735825d13e2c0b7c88f772ced2e979ba0f6924522d9335aa3d31ed224a1eba346b9a0634f295d16d96f5d255900e87e82980f2c963cac3eedeac66db7
SSDEEP 98304:Gjd75PniyBESyoELMxOGn2xDzGONa4Dk6:U75FECH6
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 6.1MB
SHA256 2bd6d64ca7deffded794e943975da85c81f178c46812bcbbae28b7059f94f13c
MD5 5fb0ca4480d77aee0577fd665a1ddb05
SHA1 6b62461470cc06854708eaf2454e8989185f0475
SHA512 7f8c149735825d13e2c0b7c88f772ced2e979ba0f6924522d9335aa3d31ed224a1eba346b9a0634f295d16d96f5d255900e87e82980f2c963cac3eedeac66db7
SSDEEP 98304:Gjd75PniyBESyoELMxOGn2xDzGONa4Dk6:U75FECH6
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-ESHD0.tmp

Path \Users\Admin\AppData\Local\Temp\is-0OD7C.tmp\is-ESHD0.tmp
Size 687KB
SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
MD5 075f33da1ee1e9c480243cac029b3c3e
SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-K97SD.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-K97SD.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-K97SD.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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jwmP1oa6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

jwmP1oa6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

jwmP1oa6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\jwmP1oa6.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/1568-92-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-75-0x0000000002160000-0x0000000003570000-memory.dmp

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memory/1568-78-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-76-0x0000000002160000-0x0000000003570000-memory.dmp

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memory/1568-97-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-74-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-77-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-91-0x0000000000400000-0x0000000001810000-memory.dmp

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memory/1568-86-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1800-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

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memory/1800-55-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1800-61-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1800-98-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1952-90-0x0000000003090000-0x00000000044A0000-memory.dmp

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memory/1952-73-0x0000000003090000-0x00000000044A0000-memory.dmp

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